use "engine enamel"... its a nice, hard, kinda glossy finish... that holds up to heat, and can be easily cleaned. There are 2 bolts to actually take the caliper off, but he was just saying to remove one of them so they swing up or down and you can spray them easier. I just did mine quick a while back, I used BBQ and stove paint black paint... just used Brake cleaner, made sure there wasnt any dirt or crap left, masked off the parts of the rotor that I didnt want painted... and painted away... if you get a little paint on the rotor, it'll get burned off the first time you use the brakes.