This appears to still be a problem in Edgy with coloured panels. See attached screenshot.
** Attachment added: "update-manager-background.png" http://librarian.launchpad.net/6917606/update-manager-background.png -- Icon update-manager not transparent https://launchpad.net/bugs/94171 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
