I used Rustoleum "Sunrise Red Gloss" It's been on my calipers for 20 months now and still looks great. I brushed it on and it came out looking terrific.

Total cost for job, $3.49 for 32 ounce can of paint and $.50 for 5 little brushes that I just threw away when I finished the job.
BTW, I have done 4 other cars with that same can of paint and still have plenty left.