Indeed French were in Odessa fighting against bolsheviks!
Some in blues (horizon blue) but mostly in khaki dress!
There were also several armies or just army units dressed in French, like greeks (in Macedonian front of WW1 you can find them in complete french kit -horizont blue- later in Odessa and in Asia Minor campaign they carried the french adrian helmet, but the kit and uniform cut was different), Armenians also in full french kit even romanians. So, you only need to replace the flags!
In interwar French saw servicde in other minor conflicts like some wars/battles in Africa and Sahara, or they showed action in Middle East (Syria) and possible or surely in Indochina. Though now they are in khakis, but if you are not too picky with uniforms then you need to paint some opponents only.