caliper stickers
As long as you drive on the road, and never get brake fluid on them, you'll be fine with vinyl stickers on your brake calipers. However, in only one lap on a track they will burn away leaving a really ugly residue that will have to be ground off. I even know of some friends that have done some intense canyon driving on a hot day that crinkled up the vinyl. So, for easy road stuff go for it. Otherwise it is high temp paint with brake fluid resistant clear coat. The absolute best way is to send the calipers to Shadowman as he deals with the companies that will do it the factory way.
Ed