There are many different color variations, but a pretty standard Russian one, also common for export, would be a two-tone banded scheme: FS 36375 gray on the upper surfaces and FS 34233 green-gray. The lower surfaces are a uniform FS 36375. The radome is darker, similar to FS 36118. In Central Europe, like Czech, and Germany, the a/c is often a brown based four to five tone scheme, but I don't know any exact colors to it. Cockpits are mainly a light gray with black around the individual instruments, I know nothing of the seats.