Turns out this is a bug in the Ubuntu theme's styling of GtkFrame, not a bug in either -control-center. You can also see it in software- properties-gtk, behind many of the checkboxes and a few of the listboxes.
** Also affects: ubuntu-themes (Ubuntu) Importance: Undecided Status: New ** No longer affects: gnome-control-center (Ubuntu) ** No longer affects: unity-control-center (Ubuntu) ** Summary changed: - Sound: Background tints around listboxes and sliders + Ugly background tint for GtkFrame inside a tab ** Changed in: ubuntu-themes (Ubuntu) Assignee: (unassigned) => Lars Uebernickel (larsu) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1276098 Title: Ugly background tint for GtkFrame inside a tab To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ubuntu-themes/+bug/1276098/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs