I noticed there was some question on the effects of colorblind people and LSD. I am red green colorblind. I don't see in black and white but I cannot distinguish two colors of similar shades and I miss almost every number in the colorblindness test with the colored dots at the optometrist's (eye doctor).
Since I have done psychedelics, especially LSD and AMT, colors have become sharper and brighter and I can more easily distinguish similar shades in bright and pastel colors, but darker colors such as dark blue and purple, have become more difficult to distinguish because they seem to morph into each other. I do see all the colors and patterns very vividly when I trip and it seems I can more easily see them than can the people I trip with, most of the time I still see stuff after everyone else has come down. I can't tell you if the colors and patterns are the same as people with normal vision, because I don't know what normal vision is. Since I have tripped I have visited the optometrist once and got 8 of 15 numbers right in the colorblindness test when before I would only get 3 at the most.
