[gnome-software] Do not show a mid-gray background for the screenshot widget

[Richard Hughes <rhughes src gnome org>]

commit b933b031c3eac1757d0a1b4ef790877358f6e61a
Author: Richard Hughes <richard hughsie com>
Date:   Fri Oct 11 20:21:38 2013 +0100

    Do not show a mid-gray background for the screenshot widget
    
    It makes the rounded rectangles with alpha look aweful.

 src/gtk-style.css |    1 -
 1 files changed, 0 insertions(+), 1 deletions(-)
---
diff --git a/src/gtk-style.css b/src/gtk-style.css
index 0c0c4db..10383b0 100644
--- a/src/gtk-style.css
+++ b/src/gtk-style.css
@@ -32,7 +32,6 @@ GtkNotebook.main-notebook-software > GtkScrolledWindow {
 
 .screenshot-image {
         background-image: none;
-        background-color: rgba(0,0,0,0.5);
 }
 
 .view.tile {