Fix Thunar sidebar. Fix for issue #742.

src/gtk-3.0/scss/_widgets.scss

@@ -31,6 +31,7 @@
 @import "apps/nemo";
 @import "apps/panel";
 @import "apps/synaptic";
+@import "apps/thunar";
 @import "apps/xfce";
 @import "apps/unity";
 @import "apps/lightdm";

src/gtk-3.0/scss/apps/_thunar.scss

@@ -0,0 +1,17 @@
+@include exports("thunar") {
+.thunar {
+  scrolledwindow.sidebar treeview.view {
+    background: $bg_color;
+    color: $fg_color;
+    
+    &:selected, &:active {
+      background: $selected_bg_color;
+      color: $selected_fg_color;
+    }
+  }
+
+  scrolledwindow.shortcuts-pane {
+    border-top-width: 1;
+  }
+ }
+}

src/gtk-3.20/scss/_widgets.scss

@@ -34,6 +34,7 @@
 @import "apps/nemo";
 @import "apps/panel";
 @import "apps/synaptic";
+@import "apps/thunar";
 @import "apps/xfce";
 @import "apps/unity";
 @import "apps/lightdm";

src/gtk-3.20/scss/apps/_thunar.scss

@@ -0,0 +1,17 @@
+@include exports("thunar") {
+.thunar {
+  scrolledwindow.sidebar treeview.view {
+    background: $bg_color;
+    color: $fg_color;
+    
+    &:selected, &:active {
+      background: $selected_bg_color;
+      color: $selected_fg_color;
+    }
+  }
+
+  scrolledwindow.shortcuts-pane {
+    border-top-width: 1;
+  }
+ }
+}