Found a company that does powder coating of calipers in any color you like, at a reasonable price, with great results.. $50 a caliper if you live in the Florida area, $60 if shipping is required. This is for a glossy red finish, may be cheaper for no gloss. Go to
www.powdertechplus.com for information.
To see where I got it from, and some real life results, check out
http://p-car.com/caliper/
