Nodes editor,
Draw an extra outline on hidden nodes that have custom colors, otherwise you can't recognize them unless you unhide.

Example: http://pasteall.org/pic/show.php?id=42359



git-svn-id: https://svn.blender.org/svnroot/bf-blender/trunk/blender@55505 954f8c5b-7b00-dc11-b283-0030488c597c