After having no luck finding a pair of even semi-reasonable gold wheels for my black ST4s, I'm considering powdercoating mine instead. Much less expensive to do than buying new wheels, but how do they hold up if you get a good outfit to do them? I'm not very hard on my bike, so I would hope that they'd stay nice for quite a while? If you've done this and recommend it, what should this operation cost for a quality job?