Given a whirl with just generic black Matt paint and it matches the color/finish for plastics under steering wheel etc. (the surround for steering wheel base what you call thing)
Not sure on variations of the black satin paints, i'd suspect the black finish on buttons etc. is not pure black and slightly grey however the finish from the first paint i got matches buttons fairly closely. I'll see if i feel like experimenting some more, next i'll probably see about getting vinyl cut outs for painting buttons to refurb however i don't see myself tackling this anytime soon (not until i get my own cutter or mate's schedule frees up who has the vinyl cutter).
Will update if i find any other matching or better matching paints, will snap a few pictures once i finish with some parts properly (will probably go occupy the bathroom for a dust free(less) environment as outside doesn't work for that).