I'll probably paint mine black when I put them on my chevelle, or I was even thinking about having them chromed. I don't think you can go wrong whatever color you choose.
I also suspect that Joel ordered tabs for a 69 Camaro, not knowing that they don't work on the Endura bumper, and then modified them with a large angle iron bracket and cut down the large top plate since it no longer attached to the bumper. They fogged them black after those mods.