iPhone app describes colors to blind man

“The next day, I went outside. I looked at the sky. I heard colors such as “Horizon,” “Outer Space,” and many shades of blue and gray. I used color cues to find my pumpkin plants, by looking for the green among the brown and stone. I spent ten minutes looking at my pumpkin plants, with their leaves of green and lemon-ginger. I then roamed my yard, and saw a blue flower. I then found the brown shed, and returned to the gray house. My mind felt blown. I watched the sun set, listening to the colors change as the sky darkened.”

My First Week with the iPhone by Austin Seraphin