In order to reduce fatigue and pain caused by prolonged use of a computer screen, visual displays can be adapted to the individual. According to the ecological theory of vision, human bodies have adapted to natural circumstances for vision. Tiredness is the consequence of the unnatural viewing that the visual system is optimized for. Through the prism of human color vision, we examined this question. What does the knowledge of color vision tell us about the inadequacy of displays to reproduce natural viewing conditions? To argue, we will discuss some recent results on human color vision geometry obtained by the authors a few months ago. In a preceding experiment we show that the human visual system operates a decomposition of the display color space into a stack of hyperboloid sheets of different photometrical levels. We will discuss the consequences of this hyperbolic geometry in color vision for the human computer interface.