[gnome-shell-sass] theme: Darken hovered message-media-control button

[Florian Müllner <fmuellner src gnome org>]

commit 84e06c97de61b9bb851f56ac718a5c389c15123d
Author: Joonas Henriksson <joonas henriksson gmail com>
Date:   Sat Nov 23 12:50:27 2019 +0200

    theme: Darken hovered message-media-control button
    
    Increases contrast between normal and hovered states in
    message-media-control buttons. Previously there was very little
    difference between the two states, making it hard to distinguish
    whether the mouse cursor was over the button.
    
    https://gitlab.gnome.org/GNOME/gnome-shell/merge_requests/855

 _common.scss | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/_common.scss b/_common.scss
index 563d32c..bddcedf 100644
--- a/_common.scss
+++ b/_common.scss
@@ -1158,7 +1158,7 @@ StScrollBar {
 
             &:last-child:ltr { padding-right: 18px; }
             &:last-child:rtl { padding-left: 18px; }
-            &:hover { color: $fg_color; }
+            &:hover { color: darken($fg_color, 10%) }
             &:insensitive { color: darken($fg_color,40%); }
           }