Such "pure" colors are foundational mental categories, or anchors, so that's only natural they should be the easiest - it makes working with colors more accessi

Such "pure" colors are foundational mental categories, or anchors, so that's only natural they should be the easiest - it makes working with colors more accessible But they should all be easy, and your suggestion fails at multiple points as I've explained above, not only for red, so the I'm puzzled why you insist it should be that hard and want a proof of the opposite