There are lots of threads on Sig Koverall, which is a really nice heat-shrinkable fabric. You need to prime with nitrate dope, or some use polycrylic. Then paint. I recently covered a couple of planes with silk and dope. I have a thread on my 4 Star and there are many other threads on it.

An easier alternative is Solartex, an excellent iron-on fabric that can be painted.

Jim