Looking at xenial by comparison, it appears not that the disabled colour has changed, but that the disabled buttons are now placed on a lighter background.
In xenial they're below the titlebar, where the grey background is darker. In artful they're in the titlebar where the grey is lighter. So the increased contrast now looks odd. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1698050 Title: Disabled arrow buttons in Nautilus header bar are too dark To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ubuntu-themes/+bug/1698050/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs