Index: gnome-shell-extensions-3.33.91/data/gnome-shell-sass/_common.scss
===================================================================
--- gnome-shell-extensions-3.33.91.orig/data/gnome-shell-sass/_common.scss
+++ gnome-shell-extensions-3.33.91/data/gnome-shell-sass/_common.scss
@@ -1916,6 +1916,7 @@ StScrollBar {
   //reset
   border: none;
   background-color: transparent;
+  background: #2e3436 url(sle-background.png);
 
   $_gdm_fg: #f6f5f4;
   $_gdm_bg: lighten(#2e3436, 19%);