I want to paint my wheels

First off, you need to get both rims bead blasted. It'll remove the stock paint without tearing up the aluminum rims.

Next, you buy a can of etching primer. This eats away just a little at the aluminum so the new paint will stick.

Since you want to match your paint, (I assume you still have a factory color) you may want to try Color-Rite for a can of paint. It's expensive, but matches well.

Spray on two coats of paint, and two coats of clear on each wheel.

They sat under a couple halogen shop lights for about 48 hours, and were allowed to cure for about a week while I waited for my Pirellis to arrive. My paint has not chipped or worn at all since I painted them over a year ago.

Other advice

Use wheel specific paint OR low-temp powder coating. The paint will have prep instructions with it, and powdercoating prep will be done by whoever does that work.