Thanks. That eliminates the possibility of the bug being in 'ubuntu- themes' since Yaru is outside of that. So this looks like a bug localised to Scilab.
** Changed in: ubuntu-themes (Ubuntu) Status: Incomplete => Invalid -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1547561 Title: Unable to use Scilab with default Ambiance theme because of low contrast in the menu To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/scilab/+bug/1547561/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs