The Ship Model Forum

Hope someone can help. I'm planning to build a Combrig Lenin gunboat 1942. On the box cover it looks like the ship is in a tricolor scheme, but from what I can gather, the instructions only show a monotone gray scheme (not that I can read Russian anyway even if they gave the colors). I was wondering if anybody could help me out with what the colors are in the tricolor scheme. Dont have any references so I don't know if the Russians standardized their colors or if the scheme was makeshift in the field. Thanks for any comments.
JB