What were the different colours in the civil war?
Reds: the Bolsheviks and their supporters -> red being the colour traditionally associated with revolution
Whites: the Bolsheviks' opponents, including monarchists looking for a tsarist restoration, and those parties who had been outlawed or suppressed by the new regime -> white traditionally associated with the Russian monarchy
Greens: groups from the national minorities, struggling for independence from central Russian control -> Green symbolising freedom