I found this bug today in our downstream platform that is still using evolution 3.10.1, and thought it would be relevant to mention that this has been fixed usptream for bug https://bugzilla.gnome.org/show_bug.cgi?id=731872, and also that the patch from there applied cleanly on top of my 3.10.1, fixing the problem seamlessly for me too.
So, perhaps you could consider reverting the hack into the CSS files for those two themes (as it impacts GtkWindow and GtkPanel widgets in general) and just backporting that patch on evolution itself too. My 2 cents ** Bug watch added: GNOME Bug Tracker #731872 https://bugzilla.gnome.org/show_bug.cgi?id=731872 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1272001 Title: Evolution black background in mail display To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/evolution/+bug/1272001/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs