Mod requests (orders).

I don't know about random changing, but it's definitely not difficult to set one specific art instead of blackness. Judging by your screenshot. You need to change HotSeatBlackBg.xdb and either add a link to the art there, or replace the xdb file itself with another one, in this style. But I haven't checked, there might be some nuances.

Well, yes, of course. If the black screen is just a simple background, then we can simply change its texture! However, such a bright picture will rather irritate the eyes.