I have found out that it is Compiz that is at fault here. When I switched desktop-effects off, the screen reverts to normal blue borders. when switching to 'normal' or 'extra' the borders go red again.
-- themes not working right https://bugs.launchpad.net/bugs/197596 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