I went to Home Base Expo today doing house shit and came across a powder coating company called "Yellow Metal". Their pamphlet advertises wheels from $60 each in a huge range of colours and effects (metallic, pearls, gloss, candy, custom made to order, yolo, swag, and possibly AutoSalon colours).
I can't vouch for their quality, but thought I'd post the info as another option for painting or coating your rims.
Yellow Metal Perth
Unit 3/51 Division Street Welshpool
9258 4355