Austin Seraphin has been blind from birth. His iPhone review is enough to make you weep:
The other night, a very amazing thing happened. I downloaded an app called Color Identifier. It uses the iPhone's camera, and speaks names of colors. It must use a table, because each color has an identifier made up of 6 hexadecimal digits. This puts the total at 16777216 colors, and I believe it. Some of them have very surreal names, such as Atomic Orange, Cosmic, Hippie Green, Opium, and Black-White. These names in combination with what feels like a rise in serotonin levels makes for a very psychedelic experience.
I have never experienced this before in my life. I can see some light and color, but just in blurs, and objects don't really have a color, just light sources...
First, I saw one of my beautiful salt lamps in its various shades of orange, another with its pink and rose colors, and the third kind in glowing pink and red. I was stunned.
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. The next night, I had a conversation with Mom about how the sky looked bluer tonight. Since I can see some light and color, I think hearing the color names can help nudge my perception, and enhance my visual experience.
Austin's follow-up post on his iPhone review and the response it got is here.