I applied the Foliatec brake caliper paint with fantastic results...However, in order to do it right the calipers have to be completely dissassembled, prepped and then painted with 3 coats. It was a time consuming project but the results were great. The directions say you can use a very small paint brush and paint the calipers while their on the car. I would not do this to an NSX, maybe a Hot Rod Civic.
Ken