I am playing with different effects possible with Aviattics' decals atm. None on an actual model yet, but rather on test cards and a painting mule. ( Roden 1/32 DH2). By using a light base, usually white tan or grey, and a light shading of smoke or other highly thinned tone, one can achieve a wide variety of finishes. Also vary the base colour too, to give highlights and shadows of the fabric. Regards, Pete in RI.