I'm guessing if you paint them black you will hate the look and end up stripping the paint off or replacing them. Leave them alone, thats the way they look best.
use heat shrink tubing on them, it'll cover all but the screw mechanism and that you can move to a less visible spot. later jim
I have had good luck with powdercoating them, any color, have done tons of them. send me a pm, I'll send you a couple.
I used to buy those at the local swap meets in Indy then couldn't find them for a while. Looked close at one and it said FoMoCo on it, but the Ford dealer where I live couldn't help me in any way, shape, or form.