Either power coated through a contact for £100, or doing them myself with paint. I'm pretty confident with my painting ability to get it right now. I've got some 2K lacquer in a can that's as hard as nails for it too (tested when I painted my door handles and with only one coat of lacquer they held up really well, not a mark). The advantage of painting mean a better finish for metallics (or so I read) and you can choose your own colour, on top of the fact it'll be cheaper to DIY.