You should be able to find a speed, performance shop that can properly paint your calipers. I had it done on my Mercedes CLK55 and I'm having the same shop do my calipers in Molten to match my car. They have to use a special heat resistant paint so unless you're looking for simple colors like black, silver or white, you may not get an exact match. The cost was around $300. Google it, you might find a shop close by you to solve your problem