This book cover shows an example of warm and cool contrast. The warm red-violet hue of Dylan seems to be coming forward out of the cool violet and blue background. There are also some discords going on, with the lighter violet against the darker blue, and even the darker red-violet against the light violet. The result creates a jarring effect for this “Icons of Pop Music” series that echoes Andy Warhol’s iconic pop culture silkscreens.