For this situation, it has come to our understanding that Hering's adversary procedure hypothesis doesn't strife with the Young-Helmholtz trichromatic hypothesis, as was initially expected. The current brought together hypothesis of shading vision joins these two speculations, with the trichromatic hypothesis clarifying the primary phase of shading handling at the cones, and the rival procedure hypothesis clarifying the second phase of shading preparing further on in the visual framework.