My 1970 Tradewind we painted with Devoe wonder pure paint. I held great, had no odor and was very easy to cleanup. The paint can be tinted to any color, or use an anti-mold additive if your trailer sits for long periods of time. We are very happy with this brand of paint it is from a very old
manufacture, the (wonder-pure) line is really great especially for working in tight places, no  headaches! And one coat coverage!

Good luck with your project.