What's the best thing to use to cover up small nicks in matte black wheels? Is there a specific brand to use for wheels?

When I got my car the previous owner had curbed the wheels pretty bad, My girlfriend also lost control of her g35x in the snow and hit the curb bad enough to break a tie rod and bend a control arm. Both times I used bondo to fill in the knicks and scratches. My wheels are matte black and I used the cheap spray wheel paint from the store, I repainted hers with silver wheel paint and you would never know. Thats the cheap way. You could always have them repaired for $$$$.