painting calipers is very easy, just dont worry about covering whole caliper in one go, it takes 2 or 3 coats, the finished result is amazing it will look red shinny plastic and then get some porsche boxster caliper stickers from ebay and what a difference..
here is a pic of mine which i painted years ago look at the brake discs to prove its not a box s... i found it very easy
my wheels are very dirty as i just got back from a long 300 mile drive plus ... i just noticed my valve cap has been stolen F***** again