I had a great uncle, years ago, early 70's, who got tired of the color of his old Biscayne and so he painted it with a roller and some leftover house paint he had in the garage! He was a lil bit unstable,

apparently a genetic defect given my recent antics, but came out, I thought at the time, pretty darn cool! Was sort of a lime green color, semi-gloss, and had a texture to it like a popcorn ceiling! (He said to get that texture, he used one of the good rollers, the Big Fuzzy ones!)

Not sure I'd try that, least not yet.
Ray