> Because that is complementary color, by color theory. If your notion of color theory is limited to RGB, then this might be reasonable. However, if you read t

> Because that is complementary color, by color theory. If your notion of color theory is limited to RGB, then this might be reasonable. However, if you read the article that you linked (https://en.wikipedia.org/wiki/Complementary_colors https://en.wikipedia.org/wiki/Complementary_colors) you'll see a much wider notion of complementary colors. Let your eyes and sense of aesthetics be the judge... most will agree that the RGB red/cyan and green/magenta pairs are garish and ugly.