Huh? The rotors were blue....hummm....guess it wore off during braking
Typo...sorry.
I did it myslef with Platikote blue caliper paint. I sprayed brake cleaner on the calipers, used a wire mesh brush to get off any surface rust etc, sprayed on more brake cleaner, masked off and painted two coats. Dries pretty fast too. Came out ok. I did my old car's calipers red with the same type of paint and it's been almost two years and they still look good.