diff --git a/browser/base/content/tabbrowser.css b/browser/base/content/tabbrowser.css
index 83fc80b0fef1..69d71543978f 100644
--- a/browser/base/content/tabbrowser.css
+++ b/browser/base/content/tabbrowser.css
@@ -97,6 +97,5 @@ browser[pendingpaint] {
   background-image: url(chrome://browser/skin/tabbrowser/pendingpaint.png);
   background-repeat: no-repeat;
   background-position: center center;
-  background-color: #f9f9f9 !important;
   background-size: 30px;
 }
diff --git a/browser/themes/shared/tabbrowser/pendingpaint.png b/browser/themes/shared/tabbrowser/pendingpaint.png
index 7bbf0fe4ba31..1a97feeeb37f 100644
Binary files a/browser/themes/shared/tabbrowser/pendingpaint.png and b/browser/themes/shared/tabbrowser/pendingpaint.png differ