You must be getting a wicked deal on paint then! 20 bucks of powder does brackets and small parts for ages. I can't even buy spray paint for what powder costs, don't even think about epoxy prime and single stage. Right now I'm in the process of building an oven large enough so I can do a motorcycle frame and other medium sized parts because a toaster oven isn't cutting it. For a lot of smaller stuff, spray paint is junk, it chips, scratches and rusts too easy and stays soft too long. Epoxy prime and single stage is great but way too much work for small parts. You're right, color selection is more limited. I don't really care but if you were trying to do a correct resto I could see it being an issue. For my driver quality stuff, plain black for suspension parts and hidden brackets and hinges is just fine.