From 4581d52c9c42beccf4f2981c7efb75fd0f9da47b Mon Sep 17 00:00:00 2001
From: Sam Foster <sfoster@mozilla.com>
Date: Thu, 11 Jul 2013 14:53:56 -0700
Subject: [PATCH] Bug 831440 - Explicitly unassign the -moz-element tab
 backgrounds when tabstrip is not visible. r=mbrubeck

--HG--
extra : rebase_source : 27fd58e329f4deef2e4eaa3e35b56b1801adfad2
---
 browser/metro/theme/browser.css | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/browser/metro/theme/browser.css b/browser/metro/theme/browser.css
index b4e125d1033..636f9ab918d 100644
--- a/browser/metro/theme/browser.css
+++ b/browser/metro/theme/browser.css
@@ -161,6 +161,9 @@ documenttab[closing] > .documenttab-container {
   width: @thumbnail_width@;
   height: @thumbnail_height@;
 }
+#tray:not([expanded]) .documenttab-thumbnail {
+  background-image: none!important;
+}
 
 .documenttab-title {
   margin: @metro_spacing_normal@ @metro_spacing_snormal@;