So some cocksucker motherfucker asshole prick decided to open not just one but both doors into the side of my car at Costco last weekend.

There are a couple of creases and an area of bare steel. Does anyone have experience with an auto paint supply shop in Reno? And can the average Steve go in and buy paint in this state? I would like to fix the damage myself.
On another note, it is rather interesting how easily the primer flakes off of the steel on my car -- could be why I seem to have an extraordinary number of paint chips on my car...