On one of the automotive forums I belong to they were talking about painting your car at home with Rustoleum. One of the replies had a link to this yachtpaint site and the is product called Brightside Polyurethane. This material is a single stage paint that they say you can get a sprayed on look with a brush or roller.
http://www.yachtpaint.com/usa/diy/produ ... thane.aspxColors are limited but might be good for the white parts.