"All colors are in nature and what happiness when it offers us two colors as powerful, orange and purple, which marry perfectly. But why is that? The chromatic circle shows us that two colors are complementary when their composition in primary color are opposite (red, blue, yellow). In our case, the yellow-orange is opposed to the violet, composed of blue and red, but not at all yellow. These two juxtaposed colors are thus found in perfect complement to each other."