Why factions color like this ?

I have had genuine argument with my friends on which side is communism and which is capitalism since we like joking about political things in game, So from my understanding tevila is blue ....you know the blue the color of nato EU and and usually USA is the communism team ? And Colom, (which alredy sounds like a communist state) which is red in color litterly the color of communism to the point where red is a must have in every communist nations flag, from china to soviet russia to NK ? is democracy? This isnt a serious post mind you i just want to joke about this thing