[gnome-shell/wip/jimmac/HC-app-icons2] HC: Set legible app icons for window thumbnails

[Jakub Steiner <jimmac src gnome org>]

commit dedb4c9908bb482cb1f178e1c775774cdfa7e00f
Author: Jakub Steiner <jimmac gmail com>
Date:   Mon Feb 8 16:28:20 2021 +0100

    HC: Set legible app icons for window thumbnails
    
    Fixes https://gitlab.gnome.org/GNOME/gnome-shell/-/issues/3692

 data/theme/gnome-shell-high-contrast.scss | 7 +++++++
 1 file changed, 7 insertions(+)
---
diff --git a/data/theme/gnome-shell-high-contrast.scss b/data/theme/gnome-shell-high-contrast.scss
index 3e97efc114..a6a5314cf2 100644
--- a/data/theme/gnome-shell-high-contrast.scss
+++ b/data/theme/gnome-shell-high-contrast.scss
@@ -33,3 +33,10 @@ stage {
   }
 }
 
+//thumbnail app icons no dropshadow and forced color
+.window-picker .icon-dropshadow {
+  icon-shadow: none;
+  background-color: $osd_bg_color;
+  padding: $base_padding * 2;
+  border-radius: $modal_radius;
+}