I had Plasti Dipped my stock TRD wheels to check what black would look like on my truck. I was surprised at how well it held up for a few months. I ultimately ended up taking the plasti dip off and selling the wheels.
Cleaning them became a PITA for me as I had lightly coated the inside of the wheel to hide the metal somewhat. Don't do that, or if you do, use plenty of coats as you would on the outside of the wheel. It's easy to remove if it is solid with good multiple coats but, thin...let's just say I made a mess with brake cleaner in the driveway. Never again.