Very Easy!!!
I painted mine last weekend. Even had my girl help me out. (she offered to help me paint them, but she never seems to offer to cook something...
) anyways, really easy. Instead of spray painting them with the can, spray the paint into the cap of the can, and with a brush, paint the calipers, this way you have more control... tip i learned the hard way.
will post pics very soon (just got a new digital camera) new toy!