Around here the paint shops don't care to mess with non shop guys. If you don't have an account, A, you pay through the nose, B, you're lucky if they will even talk to you. I buy enough that they know me but still, not the greatest in customer service. They all just want the easy repair shop work.
But yes, if you find a good paint place they can do it. It's the finding a good paint place that is the problem.