diff --git a/gtk-3.0/assets/checkbox-checked-dark.svg b/gtk-3.0/assets/checkbox-checked-dark.svg
new file mode 100644
index 0000000..2aaeaa6
--- /dev/null
+++ b/gtk-3.0/assets/checkbox-checked-dark.svg
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diff --git a/gtk-3.0/assets/checkbox-checked-insensitive-dark.svg b/gtk-3.0/assets/checkbox-checked-insensitive-dark.svg
new file mode 100644
index 0000000..c3219e2
--- /dev/null
+++ b/gtk-3.0/assets/checkbox-checked-insensitive-dark.svg
@@ -0,0 +1,9 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 16 16" xmlns:xlink="http://www.w3.org/1999/xlink">
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+</svg>
diff --git a/gtk-3.0/assets/checkbox-checked-insensitive.svg b/gtk-3.0/assets/checkbox-checked-insensitive.svg
new file mode 100644
index 0000000..4dbe967
--- /dev/null
+++ b/gtk-3.0/assets/checkbox-checked-insensitive.svg
@@ -0,0 +1,9 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 16 16" xmlns:xlink="http://www.w3.org/1999/xlink">
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+<path style="line-height:normal;color:#000" d="m 11.653408,1040.2805 c -0.365873,0.01 -0.727323,0.1623 -0.985551,0.4266 l -4.0292904,3.8367 -1.3822187,-1.5489 c -0.4918947,-0.656 -1.5705595,-0.7265 -2.1406524,-0.14 -0.5700929,0.5865 -0.4910061,1.6854 0.1569519,2.1808 l 2.3831825,2.5599 c 0.9369248,0.9369 1.3590497,0.8116 2.3049741,-0.1343 0,0 3.250459,-3.9103 5.155609,-5.232 0.421127,-0.3992 0.596878,-0.5102 0.377676,-1.0522 -0.219202,-0.542 -1.265927,-0.916 -1.840681,-0.8966 z"/>
+</g>
+</svg>
diff --git a/gtk-3.0/assets/checkbox-checked.svg b/gtk-3.0/assets/checkbox-checked.svg
new file mode 100644
index 0000000..0a5e5a5
--- /dev/null
+++ b/gtk-3.0/assets/checkbox-checked.svg
@@ -0,0 +1,7 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 16 16" xmlns:xlink="http://www.w3.org/1999/xlink">
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+</g>
+</svg>
diff --git a/gtk-3.0/assets/checkbox-mixed-dark.svg b/gtk-3.0/assets/checkbox-mixed-dark.svg
new file mode 100644
index 0000000..5765056
--- /dev/null
+++ b/gtk-3.0/assets/checkbox-mixed-dark.svg
@@ -0,0 +1,7 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 16 16" xmlns:xlink="http://www.w3.org/1999/xlink">
+<g transform="translate(0 -1036.3622)">
+<rect width="14.821" x=".621" y="1037.046" rx="1" height="14.758" style="fill:#393939"/>
+<path style="fill:#1f1f1f" d="M 2 0 C 0.892 0 3.2526065e-18 0.892 0 2 L 0 14 C 0 15.108 0.892 16 2 16 L 14 16 C 15.108 16 16 15.108 16 14 L 16 2 C 16 0.892 15.108 3.2526065e-18 14 0 L 2 0 z M 2 1 L 14 1 C 14.554 1 15 1.446 15 2 L 15 14 C 15 14.554 14.554 15 14 15 L 2 15 C 1.446 15 1 14.554 1 14 L 1 2 C 1 1.446 1.446 1 2 1 z " transform="translate(0 1036.3622)"/>
+<rect width="8" x="4" y="1043.362" height="2" style="fill:#d64937"/>
+</g>
+</svg>
diff --git a/gtk-3.0/assets/checkbox-mixed-insensitive-dark.svg b/gtk-3.0/assets/checkbox-mixed-insensitive-dark.svg
new file mode 100644
index 0000000..27e0ef1
--- /dev/null
+++ b/gtk-3.0/assets/checkbox-mixed-insensitive-dark.svg
@@ -0,0 +1,9 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 16 16" xmlns:xlink="http://www.w3.org/1999/xlink">
+<g transform="translate(0 -1036.3622)">
+<path style="fill:#2a2a2a" d="m 1.7429523,1036.9203 12.7034987,0 c 0.586479,0 1.058625,0.468 1.058625,1.0495 l 0,12.5953 c 0,0.5815 -0.472146,1.0496 -1.058625,1.0496 l -12.7034987,0 c -0.5864782,0 -1.05862497,-0.4681 -1.05862497,-1.0496 l 0,-12.5953 c 0,-0.5815 0.47214677,-1.0495 1.05862497,-1.0495 z"/>
+</g>
+<g style="fill:#1f1f1f" transform="translate(0 -1036.3622)">
+<path d="M 2 0 C 0.892 0 3.2526065e-18 0.892 0 2 L 0 14 C 0 15.108 0.892 16 2 16 L 14 16 C 15.108 16 16 15.108 16 14 L 16 2 C 16 0.892 15.108 3.2526065e-18 14 0 L 2 0 z M 2 1 L 14 1 C 14.554 1 15 1.446 15 2 L 15 14 C 15 14.554 14.554 15 14 15 L 2 15 C 1.446 15 1 14.554 1 14 L 1 2 C 1 1.446 1.446 1 2 1 z " transform="translate(0 1036.3622)"/>
+<rect width="8" x="4" y="1043.362" height="2"/>
+</g>
+</svg>
diff --git a/gtk-3.0/assets/checkbox-mixed-insensitive.svg b/gtk-3.0/assets/checkbox-mixed-insensitive.svg
new file mode 100644
index 0000000..d408465
--- /dev/null
+++ b/gtk-3.0/assets/checkbox-mixed-insensitive.svg
@@ -0,0 +1,9 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 16 16" xmlns:xlink="http://www.w3.org/1999/xlink">
+<g transform="translate(0 -1036.3622)">
+<path style="fill:#d3d3d3" d="m 1.7339331,1037.2359 12.5952689,0 c 0.581481,0 1.049605,0.4581 1.049605,1.0271 l 0,12.3247 c 0,0.569 -0.468124,1.027 -1.049605,1.027 l -12.5952689,0 c -0.5814816,0 -1.04960577,-0.458 -1.04960577,-1.027 l 0,-12.3247 c 0,-0.569 0.46812417,-1.0271 1.04960577,-1.0271 z"/>
+</g>
+<g style="fill:#aaa" transform="translate(0 -1036.3622)">
+<path d="M 2 0 C 0.892 0 3.2526065e-18 0.892 0 2 L 0 14 C 0 15.108 0.892 16 2 16 L 14 16 C 15.108 16 16 15.108 16 14 L 16 2 C 16 0.892 15.108 3.2526065e-18 14 0 L 2 0 z M 2 1 L 14 1 C 14.554 1 15 1.446 15 2 L 15 14 C 15 14.554 14.554 15 14 15 L 2 15 C 1.446 15 1 14.554 1 14 L 1 2 C 1 1.446 1.446 1 2 1 z " transform="translate(0 1036.3622)"/>
+<rect width="8" x="4" y="1043.362" height="2"/>
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+</svg>
diff --git a/gtk-3.0/assets/checkbox-mixed.svg b/gtk-3.0/assets/checkbox-mixed.svg
new file mode 100644
index 0000000..414f2f2
--- /dev/null
+++ b/gtk-3.0/assets/checkbox-mixed.svg
@@ -0,0 +1,7 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 16 16" xmlns:xlink="http://www.w3.org/1999/xlink">
+<g transform="translate(0 -1036.3622)">
+<rect width="14" x="1" y="1" rx="1" height="14" style="fill:#f9f9f9" transform="translate(0 1036.3622)"/>
+<path style="fill:#aaa" d="M 2 0 C 0.892 0 3.2526065e-18 0.892 0 2 L 0 14 C 0 15.108 0.892 16 2 16 L 14 16 C 15.108 16 16 15.108 16 14 L 16 2 C 16 0.892 15.108 3.2526065e-18 14 0 L 2 0 z M 2 1 L 14 1 C 14.554 1 15 1.446 15 2 L 15 14 C 15 14.554 14.554 15 14 15 L 2 15 C 1.446 15 1 14.554 1 14 L 1 2 C 1 1.446 1.446 1 2 1 z " transform="translate(0 1036.3622)"/>
+<rect width="8" x="4" y="1043.362" height="2" style="fill:#d64937"/>
+</g>
+</svg>
diff --git a/gtk-3.0/assets/checkbox-unchecked-dark.svg b/gtk-3.0/assets/checkbox-unchecked-dark.svg
new file mode 100644
index 0000000..36eeb4d
--- /dev/null
+++ b/gtk-3.0/assets/checkbox-unchecked-dark.svg
@@ -0,0 +1,6 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 16 16" xmlns:xlink="http://www.w3.org/1999/xlink">
+<g transform="translate(0 -1036.3622)">
+<rect width="14.442" x=".811" y="1036.92" rx="1" height="14.947" style="fill:#393939"/>
+<path style="fill:#1f1f1f" d="M 2 0 C 0.892 0 3.2526065e-18 0.892 0 2 L 0 14 C 0 15.108 0.892 16 2 16 L 14 16 C 15.108 16 16 15.108 16 14 L 16 2 C 16 0.892 15.108 3.2526065e-18 14 0 L 2 0 z M 2 1 L 14 1 C 14.554 1 15 1.446 15 2 L 15 14 C 15 14.554 14.554 15 14 15 L 2 15 C 1.446 15 1 14.554 1 14 L 1 2 C 1 1.446 1.446 1 2 1 z " transform="translate(0 1036.3622)"/>
+</g>
+</svg>
diff --git a/gtk-3.0/assets/checkbox-unchecked-insensitive-dark.svg b/gtk-3.0/assets/checkbox-unchecked-insensitive-dark.svg
new file mode 100644
index 0000000..3488e66
--- /dev/null
+++ b/gtk-3.0/assets/checkbox-unchecked-insensitive-dark.svg
@@ -0,0 +1,6 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 16 16" xmlns:xlink="http://www.w3.org/1999/xlink">
+<g transform="translate(0 -1036.3622)">
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+<path style="fill:#1f1f1f" d="M 2 0 C 0.892 0 3.2526065e-18 0.892 0 2 L 0 14 C 0 15.108 0.892 16 2 16 L 14 16 C 15.108 16 16 15.108 16 14 L 16 2 C 16 0.892 15.108 3.2526065e-18 14 0 L 2 0 z M 2 1 L 14 1 C 14.554 1 15 1.446 15 2 L 15 14 C 15 14.554 14.554 15 14 15 L 2 15 C 1.446 15 1 14.554 1 14 L 1 2 C 1 1.446 1.446 1 2 1 z " transform="translate(0 1036.3622)"/>
+</g>
+</svg>
diff --git a/gtk-3.0/assets/checkbox-unchecked-insensitive.svg b/gtk-3.0/assets/checkbox-unchecked-insensitive.svg
new file mode 100644
index 0000000..f90aa4c
--- /dev/null
+++ b/gtk-3.0/assets/checkbox-unchecked-insensitive.svg
@@ -0,0 +1,6 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 16 16" xmlns:xlink="http://www.w3.org/1999/xlink">
+<g transform="translate(0 -1036.3622)">
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+<path style="fill:#aaa" d="M 2 0 C 0.892 0 3.2526065e-18 0.892 0 2 L 0 14 C 0 15.108 0.892 16 2 16 L 14 16 C 15.108 16 16 15.108 16 14 L 16 2 C 16 0.892 15.108 3.2526065e-18 14 0 L 2 0 z M 2 1 L 14 1 C 14.554 1 15 1.446 15 2 L 15 14 C 15 14.554 14.554 15 14 15 L 2 15 C 1.446 15 1 14.554 1 14 L 1 2 C 1 1.446 1.446 1 2 1 z " transform="translate(0 1036.3622)"/>
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+</svg>
diff --git a/gtk-3.0/assets/checkbox-unchecked.svg b/gtk-3.0/assets/checkbox-unchecked.svg
new file mode 100644
index 0000000..06176e3
--- /dev/null
+++ b/gtk-3.0/assets/checkbox-unchecked.svg
@@ -0,0 +1,6 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 16 16" xmlns:xlink="http://www.w3.org/1999/xlink">
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+<rect width="14" x="1" y="1" rx="1" height="14" style="fill:#f9f9f9" transform="translate(0 1036.3622)"/>
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+</g>
+</svg>
diff --git a/gtk-3.0/assets/grid-selection-checked-dark.svg b/gtk-3.0/assets/grid-selection-checked-dark.svg
new file mode 100644
index 0000000..c1d5486
--- /dev/null
+++ b/gtk-3.0/assets/grid-selection-checked-dark.svg
@@ -0,0 +1,7 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 40 40" xmlns:xlink="http://www.w3.org/1999/xlink">
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diff --git a/gtk-3.0/assets/grid-selection-checked.svg b/gtk-3.0/assets/grid-selection-checked.svg
new file mode 100644
index 0000000..a660356
--- /dev/null
+++ b/gtk-3.0/assets/grid-selection-checked.svg
@@ -0,0 +1,7 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 40 40" xmlns:xlink="http://www.w3.org/1999/xlink">
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diff --git a/gtk-3.0/assets/grid-selection-unchecked-dark.svg b/gtk-3.0/assets/grid-selection-unchecked-dark.svg
new file mode 100644
index 0000000..f925043
--- /dev/null
+++ b/gtk-3.0/assets/grid-selection-unchecked-dark.svg
@@ -0,0 +1,6 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 40 40" xmlns:xlink="http://www.w3.org/1999/xlink">
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diff --git a/gtk-3.0/assets/grid-selection-unchecked.svg b/gtk-3.0/assets/grid-selection-unchecked.svg
new file mode 100644
index 0000000..689da2d
--- /dev/null
+++ b/gtk-3.0/assets/grid-selection-unchecked.svg
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+</svg>
diff --git a/gtk-3.0/assets/menuitem-checkbox-checked-hover.svg b/gtk-3.0/assets/menuitem-checkbox-checked-hover.svg
new file mode 100644
index 0000000..8ab7153
--- /dev/null
+++ b/gtk-3.0/assets/menuitem-checkbox-checked-hover.svg
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+</svg>
diff --git a/gtk-3.0/assets/menuitem-checkbox-checked-insensitive.svg b/gtk-3.0/assets/menuitem-checkbox-checked-insensitive.svg
new file mode 100644
index 0000000..f570a1c
--- /dev/null
+++ b/gtk-3.0/assets/menuitem-checkbox-checked-insensitive.svg
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+</svg>
diff --git a/gtk-3.0/assets/menuitem-checkbox-checked.svg b/gtk-3.0/assets/menuitem-checkbox-checked.svg
new file mode 100644
index 0000000..6fbfb3e
--- /dev/null
+++ b/gtk-3.0/assets/menuitem-checkbox-checked.svg
@@ -0,0 +1,5 @@
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+</g>
+</svg>
diff --git a/gtk-3.0/assets/menuitem-checkbox-mixed-hover.svg b/gtk-3.0/assets/menuitem-checkbox-mixed-hover.svg
new file mode 100644
index 0000000..d150f8f
--- /dev/null
+++ b/gtk-3.0/assets/menuitem-checkbox-mixed-hover.svg
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+</svg>
diff --git a/gtk-3.0/assets/menuitem-checkbox-mixed-insensitive.svg b/gtk-3.0/assets/menuitem-checkbox-mixed-insensitive.svg
new file mode 100644
index 0000000..fd8b0d4
--- /dev/null
+++ b/gtk-3.0/assets/menuitem-checkbox-mixed-insensitive.svg
@@ -0,0 +1,5 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 16 16">
+<g transform="translate(0 -1036.3622)">
+<rect width="8" x="4" y="7" height="2" style="fill:#aaa" transform="translate(0 1036.3622)"/>
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+</svg>
diff --git a/gtk-3.0/assets/menuitem-checkbox-mixed-selected.svg b/gtk-3.0/assets/menuitem-checkbox-mixed-selected.svg
new file mode 100644
index 0000000..d150f8f
--- /dev/null
+++ b/gtk-3.0/assets/menuitem-checkbox-mixed-selected.svg
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+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 16 16">
+<g transform="translate(0 -1036.3622)">
+<rect width="8" x="4" y="7" height="2" style="fill:#f9f9f9" transform="translate(0 1036.3622)"/>
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+</svg>
diff --git a/gtk-3.0/assets/menuitem-checkbox-mixed.svg b/gtk-3.0/assets/menuitem-checkbox-mixed.svg
new file mode 100644
index 0000000..a82b2c0
--- /dev/null
+++ b/gtk-3.0/assets/menuitem-checkbox-mixed.svg
@@ -0,0 +1,11 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 16 16">
+<defs>
+<filter width="1.09" x="-.045" y="-.18" height="1.36" id="filter3971">
+<feGaussianBlur stdDeviation=".15"/>
+</filter>
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+</svg>
diff --git a/gtk-3.0/assets/menuitem-radio-checked-hover.svg b/gtk-3.0/assets/menuitem-radio-checked-hover.svg
new file mode 100644
index 0000000..afb9db2
--- /dev/null
+++ b/gtk-3.0/assets/menuitem-radio-checked-hover.svg
@@ -0,0 +1,5 @@
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+<g transform="translate(0 -1036.3622)">
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+</svg>
diff --git a/gtk-3.0/assets/menuitem-radio-checked-insensitive.svg b/gtk-3.0/assets/menuitem-radio-checked-insensitive.svg
new file mode 100644
index 0000000..0bc947f
--- /dev/null
+++ b/gtk-3.0/assets/menuitem-radio-checked-insensitive.svg
@@ -0,0 +1,5 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 16 16" xmlns:xlink="http://www.w3.org/1999/xlink">
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+</svg>
diff --git a/gtk-3.0/assets/menuitem-radio-checked.svg b/gtk-3.0/assets/menuitem-radio-checked.svg
new file mode 100644
index 0000000..61f0626
--- /dev/null
+++ b/gtk-3.0/assets/menuitem-radio-checked.svg
@@ -0,0 +1,5 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 16 16" xmlns:xlink="http://www.w3.org/1999/xlink">
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+</svg>
diff --git a/gtk-3.0/assets/pane-handle-vertical.svg b/gtk-3.0/assets/pane-handle-vertical.svg
new file mode 100644
index 0000000..8a983c7
--- /dev/null
+++ b/gtk-3.0/assets/pane-handle-vertical.svg
@@ -0,0 +1,7 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 9 4">
+<g style="color:#000" transform="translate(0 -1048.3622)">
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+<rect width="1" x="-1" y="-1052.362" height="4" style="opacity:.2" transform="scale(-1)"/>
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+</svg>
diff --git a/gtk-3.0/assets/pane-handle.svg b/gtk-3.0/assets/pane-handle.svg
new file mode 100644
index 0000000..7bd3be0
--- /dev/null
+++ b/gtk-3.0/assets/pane-handle.svg
@@ -0,0 +1,7 @@
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+<g style="color:#000" transform="translate(0 -1043.3622)">
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+<rect width="1" x="1047.362" y="-4" height="4" style="opacity:.2" transform="rotate(90)"/>
+<rect width="1" x="1043.362" y="-4" height="4" style="opacity:.2" transform="rotate(90)"/>
+</g>
+</svg>
diff --git a/gtk-3.0/assets/radio-mixed-dark.svg b/gtk-3.0/assets/radio-mixed-dark.svg
new file mode 100644
index 0000000..b6b0d76
--- /dev/null
+++ b/gtk-3.0/assets/radio-mixed-dark.svg
@@ -0,0 +1,7 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 16 16">
+<g transform="translate(0 -1036.3622)">
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+</svg>
diff --git a/gtk-3.0/assets/radio-mixed-insensitive-dark.svg b/gtk-3.0/assets/radio-mixed-insensitive-dark.svg
new file mode 100644
index 0000000..6b93fc4
--- /dev/null
+++ b/gtk-3.0/assets/radio-mixed-insensitive-dark.svg
@@ -0,0 +1,9 @@
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diff --git a/gtk-3.0/assets/radio-mixed-insensitive.svg b/gtk-3.0/assets/radio-mixed-insensitive.svg
new file mode 100644
index 0000000..9fa3659
--- /dev/null
+++ b/gtk-3.0/assets/radio-mixed-insensitive.svg
@@ -0,0 +1,9 @@
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diff --git a/gtk-3.0/assets/radio-mixed.svg b/gtk-3.0/assets/radio-mixed.svg
new file mode 100644
index 0000000..a85a7ac
--- /dev/null
+++ b/gtk-3.0/assets/radio-mixed.svg
@@ -0,0 +1,7 @@
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+<g transform="translate(0 -1036.3622)">
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diff --git a/gtk-3.0/assets/radio-selected-dark.svg b/gtk-3.0/assets/radio-selected-dark.svg
new file mode 100644
index 0000000..28da8de
--- /dev/null
+++ b/gtk-3.0/assets/radio-selected-dark.svg
@@ -0,0 +1,7 @@
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diff --git a/gtk-3.0/assets/radio-selected-insensitive-dark.svg b/gtk-3.0/assets/radio-selected-insensitive-dark.svg
new file mode 100644
index 0000000..f5cfbe0
--- /dev/null
+++ b/gtk-3.0/assets/radio-selected-insensitive-dark.svg
@@ -0,0 +1,9 @@
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diff --git a/gtk-3.0/assets/radio-selected-insensitive.svg b/gtk-3.0/assets/radio-selected-insensitive.svg
new file mode 100644
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--- /dev/null
+++ b/gtk-3.0/assets/radio-selected-insensitive.svg
@@ -0,0 +1,9 @@
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+<path d="M 11,8 C 11,9.6568542 9.6568542,11 8,11 6.3431458,11 5,9.6568542 5,8 5,6.3431458 6.3431458,5 8,5 c 1.6568542,0 3,1.3431458 3,3 z" transform="translate(0 1036.3622)"/>
+</g>
+</svg>
diff --git a/gtk-3.0/assets/radio-selected.svg b/gtk-3.0/assets/radio-selected.svg
new file mode 100644
index 0000000..91cafc1
--- /dev/null
+++ b/gtk-3.0/assets/radio-selected.svg
@@ -0,0 +1,7 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 16 16">
+<g transform="translate(0 -1036.3622)">
+<path style="fill:#f9f9f9" d="m 15,8 c 0,3.865993 -3.134007,7 -7,7 C 4.1340068,15 1,11.865993 1,8 1,4.1340068 4.1340068,1 8,1 c 3.865993,0 7,3.1340068 7,7 z" transform="translate(0 1036.3622)"/>
+<path style="fill:#aaa" d="M 8 0 C 3.581722 8.8817842e-16 -3.006854e-17 3.581722 0 8 C 0 12.418278 3.581722 16 8 16 C 12.418278 16 16 12.418278 16 8 C 16 3.581722 12.418278 -1.8064254e-15 8 0 z M 8 1 C 11.865993 1 15 4.1340068 15 8 C 15 11.865993 11.865993 15 8 15 C 4.1340068 15 1 11.865993 1 8 C 1 4.1340068 4.1340068 1 8 1 z " transform="translate(0 1036.3622)"/>
+<path style="fill:#d64937" d="M 11,8 C 11,9.6568542 9.6568542,11 8,11 6.3431458,11 5,9.6568542 5,8 5,6.3431458 6.3431458,5 8,5 c 1.6568542,0 3,1.3431458 3,3 z" transform="translate(0 1036.3622)"/>
+</g>
+</svg>
diff --git a/gtk-3.0/assets/radio-unselected-dark.svg b/gtk-3.0/assets/radio-unselected-dark.svg
new file mode 100644
index 0000000..214ed94
--- /dev/null
+++ b/gtk-3.0/assets/radio-unselected-dark.svg
@@ -0,0 +1,6 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 16 16">
+<g transform="translate(0 -1036.3622)">
+<path style="fill:#393939" d="M 15,8 A 7,7 0 1 1 1,8 7,7 0 1 1 15,8 z" transform="matrix(1.04961 0 0 1.03157 -.42841 1036.2044)"/>
+<path style="fill:#1f1f1f" d="M 8 0 C 3.581722 8.8817842e-16 -3.006854e-17 3.581722 0 8 C 0 12.418278 3.581722 16 8 16 C 12.418278 16 16 12.418278 16 8 C 16 3.581722 12.418278 -1.8064254e-15 8 0 z M 8 1 C 11.865993 1 15 4.1340068 15 8 C 15 11.865993 11.865993 15 8 15 C 4.1340068 15 1 11.865993 1 8 C 1 4.1340068 4.1340068 1 8 1 z " transform="translate(0 1036.3622)"/>
+</g>
+</svg>
diff --git a/gtk-3.0/assets/radio-unselected-insensitive-dark.svg b/gtk-3.0/assets/radio-unselected-insensitive-dark.svg
new file mode 100644
index 0000000..0fdfaf4
--- /dev/null
+++ b/gtk-3.0/assets/radio-unselected-insensitive-dark.svg
@@ -0,0 +1,6 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 16 16">
+<g transform="translate(0 -1036.3622)">
+<path style="fill:#2a2a2a" d="m 7.9891678,1037.1027 c 4.0385812,0 7.3124992,3.254 7.3124992,7.2678 0,4.0139 -3.273918,7.2679 -7.3124992,7.2679 -4.0385821,0 -7.31249997,-3.254 -7.31249997,-7.2679 0,-4.0138 3.27391787,-7.2678 7.31249997,-7.2678 z"/>
+<path style="fill:#1f1f1f" d="M 8 0 C 3.581722 8.8817842e-16 -3.006854e-17 3.581722 0 8 C 0 12.418278 3.581722 16 8 16 C 12.418278 16 16 12.418278 16 8 C 16 3.581722 12.418278 -1.8064254e-15 8 0 z M 8 1 C 11.865993 1 15 4.1340068 15 8 C 15 11.865993 11.865993 15 8 15 C 4.1340068 15 1 11.865993 1 8 C 1 4.1340068 4.1340068 1 8 1 z " transform="translate(0 1036.3622)"/>
+</g>
+</svg>
diff --git a/gtk-3.0/assets/radio-unselected-insensitive.svg b/gtk-3.0/assets/radio-unselected-insensitive.svg
new file mode 100644
index 0000000..a0f2168
--- /dev/null
+++ b/gtk-3.0/assets/radio-unselected-insensitive.svg
@@ -0,0 +1,6 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 16 16">
+<g transform="translate(0 -1036.3622)">
+<path style="fill:#d3d3d3" d="m 7.9368654,1036.9834 c 4.1798076,0 7.5682106,3.3036 7.5682106,7.3788 0,4.0752 -3.388403,7.3788 -7.5682106,7.3788 -4.1798073,0 -7.56821074,-3.3036 -7.56821074,-7.3788 0,-4.0752 3.38840344,-7.3788 7.56821074,-7.3788 z"/>
+<path style="fill:#aaa" d="M 8 0 C 3.581722 8.8817842e-16 -3.006854e-17 3.581722 0 8 C 0 12.418278 3.581722 16 8 16 C 12.418278 16 16 12.418278 16 8 C 16 3.581722 12.418278 -1.8064254e-15 8 0 z M 8 1 C 11.865993 1 15 4.1340068 15 8 C 15 11.865993 11.865993 15 8 15 C 4.1340068 15 1 11.865993 1 8 C 1 4.1340068 4.1340068 1 8 1 z " transform="translate(0 1036.3622)"/>
+</g>
+</svg>
diff --git a/gtk-3.0/assets/radio-unselected.svg b/gtk-3.0/assets/radio-unselected.svg
new file mode 100644
index 0000000..2f05a0d
--- /dev/null
+++ b/gtk-3.0/assets/radio-unselected.svg
@@ -0,0 +1,6 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 16 16">
+<g transform="translate(0 -1036.3622)">
+<path style="fill:#f9f9f9" d="m 15,8 c 0,3.865993 -3.134007,7 -7,7 C 4.1340068,15 1,11.865993 1,8 1,4.1340068 4.1340068,1 8,1 c 3.865993,0 7,3.1340068 7,7 z" transform="translate(0 1036.3622)"/>
+<path style="fill:#aaa" d="M 8 0 C 3.581722 8.8817842e-16 -3.006854e-17 3.581722 0 8 C 0 12.418278 3.581722 16 8 16 C 12.418278 16 16 12.418278 16 8 C 16 3.581722 12.418278 -1.8064254e-15 8 0 z M 8 1 C 11.865993 1 15 4.1340068 15 8 C 15 11.865993 11.865993 15 8 15 C 4.1340068 15 1 11.865993 1 8 C 1 4.1340068 4.1340068 1 8 1 z " transform="translate(0 1036.3622)"/>
+</g>
+</svg>
diff --git a/gtk-3.0/gtk-widgets-assets.css b/gtk-3.0/gtk-widgets-assets.css
index 6f878e1..536c01e 100644
--- a/gtk-3.0/gtk-widgets-assets.css
+++ b/gtk-3.0/gtk-widgets-assets.css
@@ -1,339 +1,135 @@
 /*******************
  * check and radio *
  *******************/
+/* draw regular check and radio items using our assets */
 .check,
+.check:focus,
 .check row:selected,
 .check row:selected:focus {
-    background-image: linear-gradient(to bottom, @theme_base_color, @theme_base_color),
-                      linear-gradient(to bottom, @theme_base_color, @theme_base_color),
-                      linear-gradient(to bottom, shade(@theme_base_color, 0.6), shade(@theme_base_color, 0.6)),
-                      linear-gradient(to bottom, shade(@theme_base_color, 0.6), shade(@theme_base_color, 0.6)),
-                      -gtk-gradient(radial, center center, 0, center center, 0.5, to(@theme_base_color), to(transparent)),
-                      -gtk-gradient(radial, center center, 0, center center, 0.5, to(@theme_base_color), to(transparent)),
-                      -gtk-gradient(radial, center center, 0, center center, 0.5, to(@theme_base_color), to(transparent)),
-                      -gtk-gradient(radial, center center, 0, center center, 0.5, to(@theme_base_color), to(transparent)),
-                      -gtk-gradient(radial, center center, 0, center center, 0.5, to(shade(@theme_base_color, 0.6)), to(transparent)),
-                      -gtk-gradient(radial, center center, 0, center center, 0.5, to(shade(@theme_base_color, 0.6)), to(transparent)),
-                      -gtk-gradient(radial, center center, 0, center center, 0.5, to(shade(@theme_base_color, 0.6)), to(transparent)),
-                      -gtk-gradient(radial, center center, 0, center center, 0.5, to(shade(@theme_base_color, 0.6)), to(transparent));
-
-    background-position: center center, center center, center center, center center, 6% 6%, 6% 94%, 94% 94%, 94% 6%, 0% 0%, 0% 100%, 100% 100%, 100% 0%;
-    background-size: 80% 90%, 90% 80%, 80% 100%, 100% 80%, 10% 10%, 10% 10%, 10% 10%, 10% 10%, 20% 20%, 20% 20%, 20% 20%, 20% 20%;
-    background-repeat: no-repeat;
+    -gtk-icon-source: url("assets/checkbox-unchecked.svg");
 }
 
 .check:insensitive,
 .check row:selected:insensitive,
 .check row:selected:focus:insensitive {
-    background-image: linear-gradient(to bottom, shade(@theme_base_color, 0.85), shade(@theme_base_color, 0.85)),
-                      linear-gradient(to bottom, shade(@theme_base_color, 0.85), shade(@theme_base_color, 0.85)),
-                      linear-gradient(to bottom, shade(@theme_base_color, 0.6), shade(@theme_base_color, 0.6)),
-                      linear-gradient(to bottom, shade(@theme_base_color, 0.6), shade(@theme_base_color, 0.6)),
-                      -gtk-gradient(radial, center center, 0, center center, 0.5, to(shade(@theme_base_color, 0.85)), to(transparent)),
-                      -gtk-gradient(radial, center center, 0, center center, 0.5, to(shade(@theme_base_color, 0.85)), to(transparent)),
-                      -gtk-gradient(radial, center center, 0, center center, 0.5, to(shade(@theme_base_color, 0.85)), to(transparent)),
-                      -gtk-gradient(radial, center center, 0, center center, 0.5, to(shade(@theme_base_color, 0.85)), to(transparent)),
-                      -gtk-gradient(radial, center center, 0, center center, 0.5, to(shade(@theme_base_color, 0.6)), to(transparent)),
-                      -gtk-gradient(radial, center center, 0, center center, 0.5, to(shade(@theme_base_color, 0.6)), to(transparent)),
-                      -gtk-gradient(radial, center center, 0, center center, 0.5, to(shade(@theme_base_color, 0.6)), to(transparent)),
-                      -gtk-gradient(radial, center center, 0, center center, 0.5, to(shade(@theme_base_color, 0.6)), to(transparent));
-
-    background-position: center center, center center, center center, center center, 6% 6%, 6% 94%, 94% 94%, 94% 6%, 0% 0%, 0% 100%, 100% 100%, 100% 0%;
-    background-size: 80% 90%, 90% 80%, 80% 100%, 100% 80%, 10% 10%, 10% 10%, 10% 10%, 10% 10%, 20% 20%, 20% 20%, 20% 20%, 20% 20%;
-    background-repeat: no-repeat;
+    -gtk-icon-source: url("assets/checkbox-unchecked-insensitive.svg");
 }
 
 .check:active,
+.check:checked,
 .check row:selected:active,
 .check row:selected:focus:active {
-    background-image: -gtk-gradient(radial, center center, 0, center center, 0.5, to(@theme_selected_bg_color), to(transparent)),
-                      -gtk-gradient(radial, center center, 0, center center, 0.5, to(@theme_selected_bg_color), to(transparent)),
-                      -gtk-gradient(radial, center center, 0, center center, 0.5, to(@theme_selected_bg_color), to(transparent)),
-                      linear-gradient(45deg, transparent, transparent 30%, @theme_selected_bg_color 30%, @theme_selected_bg_color 70%, transparent 70%, transparent),
-                      linear-gradient(-45deg, transparent, transparent 37%, @theme_selected_bg_color 37%, @theme_selected_bg_color 62%, transparent 62%, transparent),
-                      linear-gradient(to bottom, @theme_base_color, @theme_base_color),
-                      linear-gradient(to bottom, @theme_base_color, @theme_base_color),
-                      linear-gradient(to bottom, shade(@theme_base_color, 0.6), shade(@theme_base_color, 0.6)),
-                      linear-gradient(to bottom, shade(@theme_base_color, 0.6), shade(@theme_base_color, 0.6)),
-                      -gtk-gradient(radial, center center, 0, center center, 0.5, to(@theme_base_color), to(transparent)),
-                      -gtk-gradient(radial, center center, 0, center center, 0.5, to(@theme_base_color), to(transparent)),
-                      -gtk-gradient(radial, center center, 0, center center, 0.5, to(@theme_base_color), to(transparent)),
-                      -gtk-gradient(radial, center center, 0, center center, 0.5, to(@theme_base_color), to(transparent)),
-                      -gtk-gradient(radial, center center, 0, center center, 0.5, to(shade(@theme_base_color, 0.6)), to(transparent)),
-                      -gtk-gradient(radial, center center, 0, center center, 0.5, to(shade(@theme_base_color, 0.6)), to(transparent)),
-                      -gtk-gradient(radial, center center, 0, center center, 0.5, to(shade(@theme_base_color, 0.6)), to(transparent)),
-                      -gtk-gradient(radial, center center, 0, center center, 0.5, to(shade(@theme_base_color, 0.6)), to(transparent));
-
-    background-position: 17% 50%, 41% 73%, 90% 26%, 24% 64%, 76% 48%, center center, center center, center center, center center, 6% 6%, 6% 94%, 94% 94%, 94% 6%, 0% 0%, 0% 100%, 100% 100%, 100% 0%;
-    background-size: 17% 17%, 20% 20%, 18% 18%, 30% 30%, 50% 50%, 80% 90%, 90% 80%, 80% 100%, 100% 80%, 10% 10%, 10% 10%, 10% 10%, 10% 10%, 20% 20%, 20% 20%, 20% 20%, 20% 20%;
-    background-repeat: no-repeat;
+    -gtk-icon-source: url("assets/checkbox-checked.svg");
 }
 
 .check:active:insensitive,
 .check row:selected:active:insensitive,
 .check row:selected:focus:active:insensitive {
-    background-image: -gtk-gradient(radial, center center, 0, center center, 0.5, to(shade(@theme_base_color, 0.6)), to(transparent)),
-                      -gtk-gradient(radial, center center, 0, center center, 0.5, to(shade(@theme_base_color, 0.6)), to(transparent)),
-                      -gtk-gradient(radial, center center, 0, center center, 0.5, to(shade(@theme_base_color, 0.6)), to(transparent)),
-                      linear-gradient(45deg, transparent, transparent 30%, shade(@theme_base_color, 0.6) 30%, shade(@theme_base_color, 0.6) 70%, transparent 70%, transparent),
-                      linear-gradient(-45deg, transparent, transparent 37%, shade(@theme_base_color, 0.6) 37%, shade(@theme_base_color, 0.6) 62%, transparent 62%, transparent),
-                      linear-gradient(to bottom, shade(@theme_base_color, 0.85), shade(@theme_base_color, 0.85)),
-                      linear-gradient(to bottom, shade(@theme_base_color, 0.85), shade(@theme_base_color, 0.85)),
-                      linear-gradient(to bottom, shade(@theme_base_color, 0.6), shade(@theme_base_color, 0.6)),
-                      linear-gradient(to bottom, shade(@theme_base_color, 0.6), shade(@theme_base_color, 0.6)),
-                      -gtk-gradient(radial, center center, 0, center center, 0.5, to(shade(@theme_base_color, 0.85)), to(transparent)),
-                      -gtk-gradient(radial, center center, 0, center center, 0.5, to(shade(@theme_base_color, 0.85)), to(transparent)),
-                      -gtk-gradient(radial, center center, 0, center center, 0.5, to(shade(@theme_base_color, 0.85)), to(transparent)),
-                      -gtk-gradient(radial, center center, 0, center center, 0.5, to(shade(@theme_base_color, 0.85)), to(transparent)),
-                      -gtk-gradient(radial, center center, 0, center center, 0.5, to(shade(@theme_base_color, 0.6)), to(transparent)),
-                      -gtk-gradient(radial, center center, 0, center center, 0.5, to(shade(@theme_base_color, 0.6)), to(transparent)),
-                      -gtk-gradient(radial, center center, 0, center center, 0.5, to(shade(@theme_base_color, 0.6)), to(transparent)),
-                      -gtk-gradient(radial, center center, 0, center center, 0.5, to(shade(@theme_base_color, 0.6)), to(transparent));
-
-    background-position: 17% 50%, 41% 73%, 90% 26%, 24% 64%, 76% 48%, center center, center center, center center, center center, 6% 6%, 6% 94%, 94% 94%, 94% 6%, 0% 0%, 0% 100%, 100% 100%, 100% 0%;
-    background-size: 17% 17%, 20% 20%, 18% 18%, 30% 30%, 50% 50%, 80% 90%, 90% 80%, 80% 100%, 100% 80%, 10% 10%, 10% 10%, 10% 10%, 10% 10%, 20% 20%, 20% 20%, 20% 20%, 20% 20%;
-    background-repeat: no-repeat;
+    -gtk-icon-source: url("assets/checkbox-checked-insensitive.svg");
 }
 
 .check:inconsistent,
 .check row:selected:inconsistent,
 .check row:selected:focus:inconsistent {
-    background-image: linear-gradient(to bottom, @theme_selected_bg_color, @theme_selected_bg_color),
-                      linear-gradient(to bottom, @theme_base_color, @theme_base_color),
-                      linear-gradient(to bottom, @theme_base_color, @theme_base_color),
-                      linear-gradient(to bottom, shade(@theme_base_color, 0.6), shade(@theme_base_color, 0.6)),
-                      linear-gradient(to bottom, shade(@theme_base_color, 0.6), shade(@theme_base_color, 0.6)),
-                      -gtk-gradient(radial, center center, 0, center center, 0.5, to(@theme_base_color), to(transparent)),
-                      -gtk-gradient(radial, center center, 0, center center, 0.5, to(@theme_base_color), to(transparent)),
-                      -gtk-gradient(radial, center center, 0, center center, 0.5, to(@theme_base_color), to(transparent)),
-                      -gtk-gradient(radial, center center, 0, center center, 0.5, to(@theme_base_color), to(transparent)),
-                      -gtk-gradient(radial, center center, 0, center center, 0.5, to(shade(@theme_base_color, 0.6)), to(transparent)),
-                      -gtk-gradient(radial, center center, 0, center center, 0.5, to(shade(@theme_base_color, 0.6)), to(transparent)),
-                      -gtk-gradient(radial, center center, 0, center center, 0.5, to(shade(@theme_base_color, 0.6)), to(transparent)),
-                      -gtk-gradient(radial, center center, 0, center center, 0.5, to(shade(@theme_base_color, 0.6)), to(transparent));
-
-    background-position: center center, center center, center center, center center, center center, 6% 6%, 6% 94%, 94% 94%, 94% 6%, 0% 0%, 0% 100%, 100% 100%, 100% 0%;
-    background-size: 50% 12%, 80% 90%, 90% 80%, 80% 100%, 100% 80%, 10% 10%, 10% 10%, 10% 10%, 10% 10%, 20% 20%, 20% 20%, 20% 20%, 20% 20%;
-    background-repeat: no-repeat;
+    -gtk-icon-source: url("assets/checkbox-mixed.svg");
 }
 
 .check:inconsistent:insensitive,
 .check row:selected:inconsistent:insensitive,
 .check row:selected:focus:inconsistent:insensitive {
-    background-image: linear-gradient(to bottom, shade(@theme_base_color, 0.6), shade(@theme_base_color, 0.6)),
-                      linear-gradient(to bottom, shade(@theme_base_color, 0.85), shade(@theme_base_color, 0.85)),
-                      linear-gradient(to bottom, shade(@theme_base_color, 0.85), shade(@theme_base_color, 0.85)),
-                      linear-gradient(to bottom, shade(@theme_base_color, 0.6), shade(@theme_base_color, 0.6)),
-                      linear-gradient(to bottom, shade(@theme_base_color, 0.6), shade(@theme_base_color, 0.6)),
-                      -gtk-gradient(radial, center center, 0, center center, 0.5, to(shade(@theme_base_color, 0.85)), to(transparent)),
-                      -gtk-gradient(radial, center center, 0, center center, 0.5, to(shade(@theme_base_color, 0.85)), to(transparent)),
-                      -gtk-gradient(radial, center center, 0, center center, 0.5, to(shade(@theme_base_color, 0.85)), to(transparent)),
-                      -gtk-gradient(radial, center center, 0, center center, 0.5, to(shade(@theme_base_color, 0.85)), to(transparent)),
-                      -gtk-gradient(radial, center center, 0, center center, 0.5, to(shade(@theme_base_color, 0.6)), to(transparent)),
-                      -gtk-gradient(radial, center center, 0, center center, 0.5, to(shade(@theme_base_color, 0.6)), to(transparent)),
-                      -gtk-gradient(radial, center center, 0, center center, 0.5, to(shade(@theme_base_color, 0.6)), to(transparent)),
-                      -gtk-gradient(radial, center center, 0, center center, 0.5, to(shade(@theme_base_color, 0.6)), to(transparent));
-
-    background-position: center center, center center, center center, center center, center center, 6% 6%, 6% 94%, 94% 94%, 94% 6%, 0% 0%, 0% 100%, 100% 100%, 100% 0%;
-    background-size: 50% 12%, 80% 90%, 90% 80%, 80% 100%, 100% 80%, 10% 10%, 10% 10%, 10% 10%, 10% 10%, 20% 20%, 20% 20%, 20% 20%, 20% 20%;
-    background-repeat: no-repeat;
+    -gtk-icon-source: url("assets/checkbox-mixed-insensitive.svg");
 }
 
 .radio,
 .radio row:selected,
 .radio row:selected:focus {
-    background-image: -gtk-gradient(radial, center center, 0, center center, 0.5, to(@theme_base_color), to(transparent)),
-                      -gtk-gradient(radial, center center, 0, center center, 0.5, to(shade(@theme_base_color, 0.6)), to(transparent));
-
-    background-position: center center, center center;
-    background-size: 90% 90%, 100% 100%;
-    background-repeat: no-repeat;
+    -gtk-icon-source: url("assets/radio-unselected.svg");
 }
 
 .radio:insensitive,
 .radio row:selected:insensitive,
 .radio row:selected:focus:insensitive {
-    background-image: -gtk-gradient(radial, center center, 0, center center, 0.5, to(shade(@theme_base_color, 0.85)), to(transparent)),
-                      -gtk-gradient(radial, center center, 0, center center, 0.5, to(shade(@theme_base_color, 0.6)), to(transparent));
-
-    background-position: center center, center center;
-    background-size: 90% 90%, 100% 100%;
-    background-repeat: no-repeat;
+    -gtk-icon-source: url("assets/radio-unselected-insensitive.svg");
 }
 
 .radio:active,
+.radio:checked,
 .radio row:selected:active,
 .radio row:selected:focus:active {
-    background-image: -gtk-gradient(radial, center center, 0, center center, 0.5, to(@theme_selected_bg_color), to(transparent)),
-                      -gtk-gradient(radial, center center, 0, center center, 0.5, to(@theme_base_color), to(transparent)),
-                      -gtk-gradient(radial, center center, 0, center center, 0.5, to(shade(@theme_base_color, 0.6)), to(transparent));
-
-    background-position: center center, center center, center center;
-    background-size: 40% 40%, 90% 90%, 100% 100%;
-    background-repeat: no-repeat;
+    -gtk-icon-source: url("assets/radio-selected.svg");
 }
 
 .radio:active:insensitive,
 .radio row:selected:active:insensitive,
 .radio row:selected:focus:active:insensitive {
-    background-image: -gtk-gradient(radial, center center, 0, center center, 0.5, to(shade(@theme_base_color, 0.6)), to(transparent)),
-                      -gtk-gradient(radial, center center, 0, center center, 0.5, to(shade(@theme_base_color, 0.85)), to(transparent)),
-                      -gtk-gradient(radial, center center, 0, center center, 0.5, to(shade(@theme_base_color, 0.6)), to(transparent));
-
-    background-position: center center, center center, center center;
-    background-size: 40% 40%, 90% 90%, 100% 100%;
-    background-repeat: no-repeat;
+    -gtk-icon-source: url("assets/radio-selected-insensitive.svg");
 }
 
 .radio:inconsistent,
 .radio row:selected:inconsistent,
 .radio row:selected:focus:inconsistent {
-    background-image: linear-gradient(to bottom, @theme_selected_bg_color, @theme_selected_bg_color),
-                      -gtk-gradient(radial, center center, 0, center center, 0.5, to(@theme_base_color), to(transparent)),
-                      -gtk-gradient(radial, center center, 0, center center, 0.5, to(shade(@theme_base_color, 0.6)), to(transparent));
-
-    background-position: center center, center center, center center;
-    background-size: 50% 12%, 90% 90%, 100% 100%;
-    background-repeat: no-repeat;
+    -gtk-icon-source: url("assets/radio-mixed.svg");
 }
 
 .radio:inconsistent:insensitive,
 .radio row:selected:inconsistent:insensitive,
 .radio row:selected:focus:inconsistent:insensitive {
-    background-image: linear-gradient(to bottom, shade(@theme_base_color, 0.6), shade(@theme_base_color, 0.6)),
-                      -gtk-gradient(radial, center center, 0, center center, 0.5, to(shade(@theme_base_color, 0.85)), to(transparent)),
-                      -gtk-gradient(radial, center center, 0, center center, 0.5, to(shade(@theme_base_color, 0.6)), to(transparent));
+    -gtk-icon-source: url("assets/radio-mixed-insensitive.svg");
+}
 
-    background-position: center center, center center, center center;
-    background-size: 50% 12%, 90% 90%, 100% 100%;
-    background-repeat: no-repeat;
+.menuitem.check {
+    -gtk-icon-source: none;
 }
 
 .menuitem.check:active {
-    background-image: -gtk-gradient(radial, center center, 0, center center, 0.5, to(@theme_selected_bg_color), to(transparent)),
-                      -gtk-gradient(radial, center center, 0, center center, 0.5, to(@theme_selected_bg_color), to(transparent)),
-                      -gtk-gradient(radial, center center, 0, center center, 0.5, to(@theme_selected_bg_color), to(transparent)),
-                      linear-gradient(45deg, transparent, transparent 30%, @theme_selected_bg_color 30%, @theme_selected_bg_color 70%, transparent 70%, transparent),
-                      linear-gradient(-45deg, transparent, transparent 37%, @theme_selected_bg_color 37%, @theme_selected_bg_color 62%, transparent 62%, transparent);
-
-    background-position: 17% 50%, 41% 73%, 90% 26%, 24% 64%, 76% 48%;
-    background-size: 17% 17%, 20% 20%, 18% 18%, 30% 30%, 50% 50%;
-    background-repeat: no-repeat;
+    -gtk-icon-source: url("assets/menuitem-checkbox-checked.svg");
 }
 
 .menuitem.check:active:hover {
-    background-image: -gtk-gradient(radial, center center, 0, center center, 0.5, to(@theme_selected_fg_color), to(transparent)),
-                      -gtk-gradient(radial, center center, 0, center center, 0.5, to(@theme_selected_fg_color), to(transparent)),
-                      -gtk-gradient(radial, center center, 0, center center, 0.5, to(@theme_selected_fg_color), to(transparent)),
-                      linear-gradient(45deg, transparent, transparent 30%, @theme_selected_fg_color 30%, @theme_selected_fg_color 70%, transparent 70%, transparent),
-                      linear-gradient(-45deg, transparent, transparent 37%, @theme_selected_fg_color 37%, @theme_selected_fg_color 62%, transparent 62%, transparent);
-
-    background-position: 17% 50%, 41% 73%, 90% 26%, 24% 64%, 76% 48%;
-    background-size: 17% 17%, 20% 20%, 18% 18%, 30% 30%, 50% 50%;
-    background-repeat: no-repeat;
+    -gtk-icon-source: url("assets/menuitem-checkbox-checked-hover.svg");
 }
 
 .menuitem.check:active:insensitive {
-    background-image: -gtk-gradient(radial, center center, 0, center center, 0.5, to(mix(@menu_fg_color, @menu_bg_color, 0.5)), to(transparent)),
-                      -gtk-gradient(radial, center center, 0, center center, 0.5, to(mix(@menu_fg_color, @menu_bg_color, 0.5)), to(transparent)),
-                      -gtk-gradient(radial, center center, 0, center center, 0.5, to(mix(@menu_fg_color, @menu_bg_color, 0.5)), to(transparent)),
-                      linear-gradient(45deg, transparent, transparent 30%, mix(@menu_fg_color, @menu_bg_color, 0.5) 30%, mix(@menu_fg_color, @menu_bg_color, 0.5) 70%, transparent 70%, transparent),
-                      linear-gradient(-45deg, transparent, transparent 37%, mix(@menu_fg_color, @menu_bg_color, 0.5) 37%, mix(@menu_fg_color, @menu_bg_color, 0.5) 62%, transparent 62%, transparent);
-
-    background-position: 17% 50%, 41% 73%, 90% 26%, 24% 64%, 76% 48%;
-    background-size: 17% 17%, 20% 20%, 18% 18%, 30% 30%, 50% 50%;
-    background-repeat: no-repeat;
-}
-
-.menuitem.radio:active {
-    background-image: -gtk-gradient(radial, center center, 0, center center, 0.5, to(@theme_selected_bg_color), to(transparent));
-    background-position: center center;
-    background-size: 40% 40%;
-    background-repeat: no-repeat;
-}
-
-.menuitem.radio:active:hover {
-    background-image: -gtk-gradient(radial, center center, 0, center center, 0.5, to(@theme_selected_fg_color), to(transparent));
-    background-position: center center;
-    background-size: 40% 40%;
-    background-repeat: no-repeat;
-}
-
-.menuitem.radio:active:insensitive {
-    background-image: -gtk-gradient(radial, center center, 0, center center, 0.5, to(mix(@menu_fg_color, @menu_bg_color, 0.5)), to(transparent));
-    background-position: center center;
-    background-size: 40% 40%;
-    background-repeat: no-repeat;
-}
-
-.menuitem.check:inconsistent,
-.menuitem.radio:inconsistent {
-    background-image: linear-gradient(to bottom, @theme_selected_bg_color, @theme_selected_bg_color);
-
-    background-position: center center;
-    background-size: 50% 12%;
-    background-repeat: no-repeat;
+    -gtk-icon-source: url("assets/menuitem-checkbox-checked-insensitive.svg");
 }
 
 .menuitem.check:inconsistent:hover,
 .menuitem.radio:inconsistent:hover {
-    background-image: linear-gradient(to bottom, @theme_selected_fg_color, @theme_selected_fg_color);
+    -gtk-icon-source: url("assets/menuitem-checkbox-mixed-hover.svg");
+}
 
-    background-position: center center;
-    background-size: 50% 12%;
-    background-repeat: no-repeat;
+.menuitem.check:inconsistent,
+.menuitem.radio:inconsistent {
+    -gtk-icon-source: url("assets/menuitem-checkbox-mixed.svg");
 }
 
 .menuitem.check:inconsistent:insensitive,
 .menuitem.radio:inconsistent:insensitive {
-    background-image: linear-gradient(to bottom, mix(@menu_fg_color, @menu_bg_color, 0.5), mix(@menu_fg_color, @menu_bg_color, 0.5));
+    -gtk-icon-source: url("assets/menuitem-checkbox-mixed-insensitive.svg");
+}
 
-    background-position: center center;
-    background-size: 50% 12%;
-    background-repeat: no-repeat;
+.menuitem.radio {
+    -gtk-icon-source: url("assets/menuitem-radio-checked.svg");
+}
+
+.menuitem.radio:active {
+    -gtk-icon-source: url("assets/menuitem-radio-checked.svg");
+}
+
+.menuitem.radio:active:hover {
+    -gtk-icon-source: url("assets/menuitem-radio-checked-hover.svg");
+}
+
+.menuitem.radio:active:insensitive {
+    -gtk-icon-source: url("assets/menuitem-radio-checked-insensitive.svg");
 }
 
 GtkIconView.content-view.cell.check {
-    background-image: linear-gradient(to bottom, @theme_base_color, @theme_base_color),
-                      linear-gradient(to bottom, @theme_base_color, @theme_base_color),
-                      linear-gradient(to bottom, shade(@theme_base_color, 0.6), shade(@theme_base_color, 0.6)),
-                      linear-gradient(to bottom, shade(@theme_base_color, 0.6), shade(@theme_base_color, 0.6)),
-                      -gtk-gradient(radial, center center, 0, center center, 0.5, to(@theme_base_color), to(transparent)),
-                      -gtk-gradient(radial, center center, 0, center center, 0.5, to(@theme_base_color), to(transparent)),
-                      -gtk-gradient(radial, center center, 0, center center, 0.5, to(@theme_base_color), to(transparent)),
-                      -gtk-gradient(radial, center center, 0, center center, 0.5, to(@theme_base_color), to(transparent)),
-                      -gtk-gradient(radial, center center, 0, center center, 0.5, to(shade(@theme_base_color, 0.6)), to(transparent)),
-                      -gtk-gradient(radial, center center, 0, center center, 0.5, to(shade(@theme_base_color, 0.6)), to(transparent)),
-                      -gtk-gradient(radial, center center, 0, center center, 0.5, to(shade(@theme_base_color, 0.6)), to(transparent)),
-                      -gtk-gradient(radial, center center, 0, center center, 0.5, to(shade(@theme_base_color, 0.6)), to(transparent));
-
-    background-position: center center, center center, center center, center center, 6% 6%, 6% 94%, 94% 94%, 94% 6%, 0% 0%, 0% 100%, 100% 100%, 100% 0%;
-    background-size: 80% 90%, 90% 80%, 80% 100%, 100% 80%, 10% 10%, 10% 10%, 10% 10%, 10% 10%, 20% 20%, 20% 20%, 20% 20%, 20% 20%;
-    background-repeat: no-repeat;
+    -gtk-icon-source: url("assets/grid-selection-unchecked.svg");
 }
 
 GtkIconView.content-view.cell.check:active {
-    background-image: -gtk-gradient(radial, center center, 0, center center, 0.5, to(@theme_selected_bg_color), to(transparent)),
-                      -gtk-gradient(radial, center center, 0, center center, 0.5, to(@theme_selected_bg_color), to(transparent)),
-                      -gtk-gradient(radial, center center, 0, center center, 0.5, to(@theme_selected_bg_color), to(transparent)),
-                      linear-gradient(45deg, transparent, transparent 30%, @theme_selected_bg_color 30%, @theme_selected_bg_color 70%, transparent 70%, transparent),
-                      linear-gradient(-45deg, transparent, transparent 37%, @theme_selected_bg_color 37%, @theme_selected_bg_color 62%, transparent 62%, transparent),
-                      linear-gradient(to bottom, @theme_base_color, @theme_base_color),
-                      linear-gradient(to bottom, @theme_base_color, @theme_base_color),
-                      linear-gradient(to bottom, shade(@theme_base_color, 0.6), shade(@theme_base_color, 0.6)),
-                      linear-gradient(to bottom, shade(@theme_base_color, 0.6), shade(@theme_base_color, 0.6)),
-                      -gtk-gradient(radial, center center, 0, center center, 0.5, to(@theme_base_color), to(transparent)),
-                      -gtk-gradient(radial, center center, 0, center center, 0.5, to(@theme_base_color), to(transparent)),
-                      -gtk-gradient(radial, center center, 0, center center, 0.5, to(@theme_base_color), to(transparent)),
-                      -gtk-gradient(radial, center center, 0, center center, 0.5, to(@theme_base_color), to(transparent)),
-                      -gtk-gradient(radial, center center, 0, center center, 0.5, to(shade(@theme_base_color, 0.6)), to(transparent)),
-                      -gtk-gradient(radial, center center, 0, center center, 0.5, to(shade(@theme_base_color, 0.6)), to(transparent)),
-                      -gtk-gradient(radial, center center, 0, center center, 0.5, to(shade(@theme_base_color, 0.6)), to(transparent)),
-                      -gtk-gradient(radial, center center, 0, center center, 0.5, to(shade(@theme_base_color, 0.6)), to(transparent));
-
-    background-position: 17% 50%, 41% 73%, 90% 26%, 24% 64%, 76% 48%, center center, center center, center center, center center, 6% 6%, 6% 94%, 94% 94%, 94% 6%, 0% 0%, 0% 100%, 100% 100%, 100% 0%;
-    background-size: 17% 17%, 20% 20%, 18% 18%, 30% 30%, 50% 50%, 80% 90%, 90% 80%, 80% 100%, 100% 80%, 10% 10%, 10% 10%, 10% 10%, 10% 10%, 20% 20%, 20% 20%, 20% 20%, 20% 20%;
-    background-repeat: no-repeat;
+    -gtk-icon-source: url("assets/grid-selection-checked.svg");
 }
 
 /******************