+1 for powdercoating, polishing is for mugs.
Contact Craved on these forums, he has a million colours and I dare say will be a lot cheaper than what hi octane would charge.
He has done a LOT of work for me and I am very happy with it, I also wanted the polished/chrome look and Chris has so far coated my Plenum, Runners, Crossover pipe and a lot of IC piping and it looks really good.
If you want pics let me know