I have painted my calipers and is really very easy, you can see them in my pics in my sig.
I used Dupli-color kit that I got at wal-mart for $15. They come in black, yellow, red, blue and silver. I used my floor jack with a special lifting pad that fits into the oval slots in the kappa frame lifting points. The lifting pad costs $19 and is from the corvette lifting pad, if you are going to change your oil and do other things you might as well get one. Do not use the brush in the kit, it is crap, go buy a #8 brush at craft store, or wal-mart when you get the paint.
I did one wheel at a time, the rear ones are the harder ones because there is a wire retainer easy to take of but can be difficult to put back on.
1. Remove wire retainer, paint those silver if you like.
2. Release hand brake, Remove the caliper with #7 hex, 2 bolts. Slide caliper off (watch to make sure the pads do not fall on concrete) let caliper hange.
3. Remove braket using 16mm wrench 2 bolts. Paint bracket 3 times, each coat dries in 10-15 minutes.
4. Paint caliper with 3 coats. On the inside of the caliper you will see machined areas, do not paint this areas.
5. Put the bracket back on. Put the pads back on the rotor, slide the caliper back on and bolt up.
6. Do not put the wire retainer back on, the calipers need to fully cure dry 24 hours. Put the wheel back on and go to the front wheel.
7. After a day drying, take rear wheel off put retainer wire back on, can be tricky and scratch the paint, if it does just touch up.
The front ones are the easiest, no wire retainers, do the same as above.
In reference to decals I just got mine in the mail yesterday from xenonmods. The decals say SOLSTICE in the solstice font, and come in diff colors. I actually supplied the detailed dimensions of the front and rear brakes to them in order for them to be made. I am sure they will be making the sky decals as well, they sell for $8 and no SH charges, just mail.