Chromance Sunglasses in Black & BlueThe Ray Ban Chromance Sunglasses in Black & Blue. When extraordinary vision relies on pioneering design and high performance features, Ray Ban always steps up to the challenge: live the revolutionary experience of Chromance lens technology in total style. The bold profile of this powerful new squared shape with exclusive new lenses takes game changing, high performance vision to a whole new level. Available in tones of matt black or tortoise and shiny