I've thought about that also, hard to know what colour looks like through another persons eyes. I mean how do you describe a colour? I suppose you could say 'yellow is bright' but still pretty vague and you can get dull shades of yellow.

I remember reading how different creatures can see different colours to humans, I think butterflies can see ultraviolet light and snakes can see infrared. If we could see all of the light spectrum I assume your vision would be too bombarded though to interpret it all.

I've also read about people saying they've seen a whole new colour while on psychedelics :silly: hard to imagine eh?