heres what i used guys. Duplicolor also sells a caliper cleaner to use before you paint them but its the same damn thing as brake cleaner except $3 more and a smaller can lol After the sprayed the caliper good with the cleaner i whipped them up with a paper towel and scuffed them up with some 300 grit sandpaper like it says to do. i then sprayed em. i have to respray mine a little, since it was so humid when i did it they didnt dry all the way. The fronts i did off of the truck but the rears im just going to do on the truck and tape the rotors and everything off. The paint is a really nice bright red color. matches my truck pretty damn close. I saw white black and blue as well....not sre if you can get other colors. The blue wasnt a rattle can, it was a brush on system. might make it easier to do it when the calipers are on the truck than with the rattle can.
