About 10 years ago I built a DVII from RCM plans. It was around 1/5th scale. For the lozenge the designer of this model. (Gordon Whitehead) also did a stencil for each color. You cut out each color and placed the darkest color stencil on the wing and painted them first. Then onto the next lightest color and so on. It was tedious but worked out quite well. I covered my model with 21st Century fabric, then painted it with water based enamals. I used polyurathane to fuel proof it for glow. Not sure if you could get a set of those stencils as RCM is no longer in publication. Not sure if I still have my set or not.

Hope this hleps as an alternative to rpinting fabric.

John B.