Another option we used G2 a caliper paint. It's self leveling dries by the time you've painted around the car (the next 3 wheels) so that you can put another coat on. When done it is smooth, hard finish, you would think it was professionally done. We added the white heat resistant sticker to complete them. You can buy it from the manufacturer, but it was cheaper from:
G2 Brake Caliper Paint Kit: Hubcaps Plus After Market Parts and Accessories For Cars, Trucks and SUVs
Life time warranty. One of ours was damaged by the wheel weight. This company sent out a whole new kit at no charge. If there is a color you want it is worth considering.
A=prep of calipers B=finished and dry C=with "emblem" (sticker) on/completed job