Well, I cheated a little on the colors. On the red parts: red silk on fuselage and tail, red tissue on wing, I poured a little, few drops, red Aerogloss Stearman red, without mixing it up, into Sig Litecoat clear. I brushed this on like it was clear dope. There is enough texture on the silk and tissue that you can't see the brush strokes. I have some yellow dye in butyrate dope that a friend gave me. It was dye sold for use on polyspan. Put some of this into Sig Litecoat and sprayed the red and yellow (yellow silk) parts of the airplane. Then masked off the blue and black areas and painted them with brush. Didn't get any bleed through of the yellow. The numbers are cut from black art tissue.

I put a couple of coats of very thin clear on the wing before sticking the red tissue and black numbers down with thinner.