RE: Looking for paint compatability for 21st Century Fabric
Latex paint will have zero compatibility problems, however, you will need to clear coat it to make it fuel proof. If you lightly scuff the surface of the fabric you should have no problems spraying it directly on the fabric without a primer.
MOST other type of paint should be no problems PROVIDED you prime the fabric first AND LET THE PRIMER DRY THOROUGHLY before applying any color coats.
FWIW - latex paint with a clear coat usually is lighter than other paints. Latex can be had in an EXACT color match for about $10 a quart.