Checking in patch for bug 52054 by Decklin Foster <fosterd@hartwick.edu>. r=bryner, a=brendan.

widget/src/gtk/nsLookAndFeel.cpp

@@ -158,7 +158,7 @@ NS_IMETHODIMP nsLookAndFeel::GetColor(const nsColorID aID, nscolor &aColor)
     aColor = GDK_COLOR_TO_NS_RGB(mStyle->fg[GTK_STATE_NORMAL]);
     break;
   case eColor_scrollbar:
-    aColor = GDK_COLOR_TO_NS_RGB(mStyle->bg[GTK_STATE_NORMAL]);
+    aColor = GDK_COLOR_TO_NS_RGB(mStyle->bg[GTK_STATE_ACTIVE]);
     break;
 
   case eColor_threedface: