Tommy Edison, the blind film critic, responds to a viewers request to see if he can guess the colors of scented markers.

I think his success rate is more due to the fact that those kinds of markers smell terrible anyway, and don't have very refined odors.

Tommy Edison has a whole series of videos on YouTube in which he talks about his experience as a person who has been blind from birth. Here's a video in which he talks about color being a category of language and reference that will never be able to fully grasp.