I will say what I always say when someone asks this kind of question. There is no perfect color for a uniform. Or a specific tank for that matter. Uniforms from one company might be one color, uniforms from another might be a different color. They both call them field gray. It might be one made pants, one made field jackets. The same solider might wear both at the same time. So his pants did not match his jacket. We like to think of things like this in absolutes, but it just does not work that way in the real world. It might be a tank factory used paint from maker A all morning long, and paint from maker B from noon to the end of the day. The government inspectors at the end of the line did not say 'Hey that first group needs to be repainted because the shade is different from what came out in the afternoon'. They said' Those all look like gray tanks to me lets get just as many done tomorrow'. Same was true for uniforms. Ask any uniform collector. So use what works for you. Use the colors that seem to be the best match based on your research. You can find photos of most German uniforms on the web now.