This has been fixed with gnome-control-center 3.6.3 which was uploaded to raring for Ubuntu 13.04. Basically we're not using category header icons any more.
** Changed in: gnome-control-center (Ubuntu) Status: Confirmed => Fix Released -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gnome-control-center in Ubuntu. https://bugs.launchpad.net/bugs/934335 Title: GNOME Control Center category icons only work for Ambiance and Radiance. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-control-center/+bug/934335/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs