* [GTK 3.20] Fixed #430 (#523)

Author: megax

gtk-3.20/scss/_global.scss

@@ -103,7 +103,8 @@ $backdrop_text_color: mix($backdrop_base_color, $text_color, .8);
 $backdrop_bg_color: $bg_color;
 $backdrop_fg_color: mix($fg_color, $backdrop_bg_color, .5);
 $backdrop_insensitive_color: if($variant == 'light', darken($backdrop_bg_color, 15%), lighten($backdrop_bg_color, 15%));
-$backdrop_selected_fg_color: mix($selected_bg_color, $selected_fg_color, .66);
+$backdrop_selected_bg_color: $selected_bg_color;
+$backdrop_selected_fg_color: if($variant == 'light', $backdrop_base_color, $backdrop_text_color);
 $backdrop_borders_color: mix($bg_color, $borders_color, .9);
 $backdrop_dark_fill: mix($backdrop_bg_color, $backdrop_borders_color, .35);
 $backdrop_sidebar_bg_color: mix($backdrop_bg_color, $backdrop_base_color, .5);

gtk-3.20/scss/widgets/_misc.scss

@@ -305,6 +305,7 @@
             &:disabled { color: mix($selected_fg_color, $selected_bg_color, .5); }
 
             &:backdrop {
+                background-color: $backdrop_selected_bg_color; // Fixed Issue #430
                 color: $backdrop_selected_fg_color;
 
                 &:disabled { color: mix($backdrop_selected_fg_color, $selected_bg_color, .3); }