For some reason it manifested itself again. This time I immediately made a screen shot and it looks like all icons appear darker than in my previous screen shot which was made on another computer.
** Attachment added: "Indicators" http://launchpadlibrarian.net/35112621/NetworkIndicator.png -- Charge indicator not visible https://bugs.launchpad.net/bugs/461450 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs