The previous chapters have shown more elementary colours are experienced than the orthodox theory recognizes, and that there are credible reports of colour combinations denied by the orthodox view of colour experience—reddish greens and yellowish blues. These results give a much richer phenomenology of colour than that of the orthodox view, and more accurately reflect the character of colour experience. But this account of colour experience meets a challenge in the opponent process theory, which prohibits these colour experiences elementary colours beyond those proposed by Hering, along with reddish greens and yellowish blues. This chapter responds by showing that the phenomenology of colour I outline finds support in recent scientific research on the neurophysiology of vision that suggests the possibility of a kind of coding of colour information that differs from opponent processing.