Go to local auto shop (pep boys, kragen, etc.) purchase Adhesion promoter, sand paper, can of silver paint - high heat/engine paint (higher heat the better, they come in 500 degrees adn 1200 degrees)., and a can of clear coat
Here's what I did:
Tape off hub
Clean calipers
Then spray calipers with oven degreaser, scrub off with a tire brush
make em clean
let dry
apply 2 layers of adhesion promoter (letting time between each layer to dry) it dries quickly
then apply a layer of paint. light, doesnt need ot cover everything
let dry
another layer
dry
layer
dry
so on for about 7 layers
then
apply a layer of clear coat
dry
clear coat
dry for a few hours
Use nail polish remover to remove any paint that may have gotten on other parts of the rotor other than the face of the rotor