Anders, thanks a lot for changing the topic name and also thanks for your comments.
Roc, the red color (in trousers) is made using a mix of red (926) + flat red (957). This is the basic color. The lights are made using base color + old rose (944) in at least five ligths. The shadows are made using intense blue (925)+base color. All color are Vallejo acrylic colors.
I tried to use different colors for kepi, trousers and pouch belt. All based on red colors but mixed with different colors. In example the kepi is mixed with yellow for getting the lights (I tried to put more bright in kepi because the sun effect). The pouch belt is mixed with brown colors for trying to get a leather effect.
Thanks a lot,
Rafa