Quote Originally Posted by slash112 View Post
but things outside the visible light part of the spectrum arent colour, they are different types of light, and that has nothing to do with the fact its invisible, they are just totally different. infact someone said this earlier (i think it was slayer) and i didnt understand at the time, i do now.
Color is a psychological phenomenon of perception existing, arising from the physical properties of the waves of electromagnetic radiation we call light.
We are unable to see outside of the visible spectrum due to the limited variety of cones in the human eye(3, sometimes 4). If we were to gain sensory input from a different type of cone, our brain would have a new, unique wavelength to interpret and would come up with a new color to describe this.