First, I have
not forgot to change UK to brown. That pink was based off of old British maps (provided by The Great Allenby) of their Empire and is the exact color it should be. UK being brown just doesn't fit. If you don't like it, no one is forcing you to use it.

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Second, the entire pallette has been redone except for one or two colors (for example, black).
Lastly, once again, if you don't like the color of the USSR, do not use the mod. It is much less "agonizing" than HOI2's default color, and it is more menacing. Communism is a threat, not eye-candy!