I plasti-dipped mine. Prep work consisted of a quick wipe down to get all the brake dust and grime off. Sprayed until I couldn't see chrome anymore. The trick is to get all sides of the spokes so you may need to try shinging light from different angles to make sure you get everything.
This was almost exactly 1 year ago. They have held up pretty well. The plastidip is peeling a bit in the corners now, but still holding up over all. It's not as vibrant as it was right after I painted, but it still looks great. Overall I was very pleased with the result. The good thing is if you don't like it, just peel it off and your back home in chrome.
Before:
After: