I've had the basic ugly cream ( old ) light switchplates in my kitchen, and I finally had it. So instead of paying $6+ each for new oil rubbed bronze ones, I decided to pay $9 in spraypaint and redo all 9 plates. They turned out pretty decent I think.
I primed it with Plastic Primer, Let it dry, Then sprayed them with dark espresso brown, Let it dry, Then lastly sprayed with Rustoleum's Antique Brass Spraypaint. You MUST wait til each layer is dry before applying the next.