[gnome-music] theme: fix sidelist shadow

[Marinus Schraal <mschraal src gnome org>]

commit 2caa35c80fe3392a4feb317e8325d7eb0b59bd3d
Author: Georges Basile Stavracas Neto <georges stavracas gmail com>
Date:   Thu Aug 11 20:16:22 2016 -0300

    theme: fix sidelist shadow
    
    The current sidelist shadow appears as a light
    shadow over a light gray background. This breaks
    the impression of depth that this shadow was designed
    for, and makes it look strange on the dark variant
    of Adwaita.
    
    Fix that by setting the color to translucid black.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=769774

 data/application.css |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/data/application.css b/data/application.css
index 44da2a1..5b8199f 100644
--- a/data/application.css
+++ b/data/application.css
@@ -34,11 +34,11 @@ GtkTreeView{
 }
 
 .side-panel .view:dir(ltr) {
-    box-shadow: inset -10px 0 5px -10px @borders;
+    box-shadow: inset -10px 0 5px -10px alpha(black, 0.25);
 }
 
 .side-panel .view:dir(rtl) {
-    box-shadow: inset 10px 0 5px -10px @borders;
+    box-shadow: inset 10px 0 5px -10px alpha(black, 0.25);
 }
 
 .side-panel .view:selected {