Thread:Piisfun/@comment-34462850-20180514111236/@comment-34929636-20180517200845

You would have to manually define it for every group. There is no simple 'darken' option, you have to feed it the exact color value for every group.

As for the shadow in the top menu, I suppose we could always ask FANDOM, because I have no idea, other than what you appear to have already tried.