[gnome-shell-sass] make expanders more visible for alt-tab

[Jakub Steiner <jimmac src gnome org>]

commit 3573116e4f13f55339401a461195fe55126a0465
Author: Jakub Steiner <jimmac gmail com>
Date:   Mon May 11 15:09:51 2015 +0200

    make expanders more visible for alt-tab
    
    https://bugzilla.gnome.org/show_bug.cgi?id=745058

 _common.scss |    9 ++++-----
 1 files changed, 4 insertions(+), 5 deletions(-)
---
diff --git a/_common.scss b/_common.scss
index 975228b..8469922 100644
--- a/_common.scss
+++ b/_common.scss
@@ -555,11 +555,10 @@ StScrollBar {
 
   .switcher-arrow {
     border-color: rgba(0,0,0,0);
-    color: $borders_color;
-  }
-
-  .switcher-arrow:highlighted {
-    color: $fg_color;
+    color: transparentize($fg_color,0.2);
+    &:highlighted {
+      color: $fg_color;
+    }
   }
 
   .input-source-switcher-symbol {