If you search it there are plenty of in depth threads about it. Here are some good starter tips though.
1 scuff and clean the wheels.
2 spray adhesion promoter on the wheels
3 prime the wheels
4 paint the wheels 2 or 3 coats
I would love to paint my wheels gold on my wr blue wrx also but, I dont have the cash to do it properly right now. I think it will look dope though. I say do it just rember good prep work will result in a good finish.You can either break the tires off the rims or some people put playing cards around the tire to protect the tire from paint. good luck and post some pics if you do it. You might inspire me to finally do mine.
I painted mine 2 summers ago and they finally started to get a bunch of rock chips in them. That is really the only downside to painting your wheels. But you can always just repaint them if they start to get too bad. i was installing my new tires a couple of days ago and decided to repaint mine for the second time so i did it with the tires off the wheels and it turned out better. you can just get around the lip of the rim better, when i painted them the first time (w/tires on the wheels) there were a few spot around the lip that i missed.
Duplicolor wheel paint is what i used, it seems to go on pretty thick and lasts a long time, just not a lot of color choices. I did 3 coats of color and 3 coats of clear.
i painted my wheels gloss black over the weekend with the tires on. i use airplane grade paint remover which worked out amazingly, only problem was since that tires were on the paint resedue was all in that crack between the tire and rim and took a while to get out. also while i was doing this i was thinking: how come subaru goes cheap on the body paint yet puts down so much primer and paint and gloss on the wheels lol.
after i did that i dremeld all the spots i missed scraping the crap off.
then used self etching primer, bout 3 coats
then used rustolium auto paint gloss black, put 3 coats of that
wheels turned out wonderful. since i live in houston where the humidity is 70+ lol, it takes a little longer for the wheels to dry.
over all the cost for the paint remover, paint, and primer was no more than $50
I just used sandpaper to scuff the wheels.
I use a brand called Bulldog, this shit is the best, I use it on anything I paint.
Duplicolor make a bronze, but its doesn't look that good. I suppose you could use any paint though, it doesn't need to be made specifically for wheels.