Andy Warhol's piece has unity and balance, the repetitiveness of his work is in its self, unity but as each block has a different color palette contradicting the other, there is an equal amount of difference. Andy chose such unnatural vibrant colors was to alienate the subject from the viewer, he had an obsession with wanting to like a robot and so that reflected into is work; he is choosing these colors with the mindset of being who cannot comprehend emotion, this is why the colors seem randomized and bold.