Painted silver on WRB BRZ:
I honestly don't recommend painting these yourself unless you are prepared for the upkeep.
Process: I started by sanding the wheels and then I used 2 coats of a light gray base coat filler primer then 2 coats of hyper silver and 2 coats of clear. It looked really good when it was done as you can see. Unfortunately, the corrosive dust from my track pads combined with a rainy track day destroyed them. This is how they look now:
It would probably be fine if you aren't tracking your car but be prepared to be painting them every year or two if you don't want them looking like garbage.