Hi @wolfman and Happy Holidays.
You pick my favorite theme. I heard color setting isn’t feasible in GTK3 now. But I think it’s because a dialog to set color isn’t feasible to modify the theme (yet?). I’d love to hear from the devs exactly the situation.
When I get some time, I was going to try a little trial-and-error reverse engineering inside /usr/share/themes/TraditionalOk/gtk-3.0 and see what I can do in a 16.10 vm. I’d also love to find some help info on this - like creating a separate theme based on an existing one.
I have a totally different show-stopper: Whoa! 16.10 Themes Kill Keyboard Navigators!