Dupes, most Soviet Mig-19's I've seen were NMF with colored ID bands or what have you. For example:
Also, here is a link to a decal review for a Su-7 Fitter, which has some approximations of Soviet colors to FS numbers.
http://www.aircraftresourcecenter.com/ISL/Hi-Decal_Line/1.48/48011-48020/48012_SU-7/HD48012.htm
Pollyscale still offers some Soviet colors.
I think in the end you're just going to have to wing it. If that gets your knickers in a bind, then stop hanging out in the armor forum so much.