Four color blind people in Las Vegas were able to see colors for the very first time on Wednesday thanks to special glasses developed by EnChroma that enable the color blind to see colors more like people with normal color vision.
To the color blind, the world can appear gray, brown, dull and some colors indistinguishable (like purple and blue).
They can't see many of the colors the rest of take for granted like those in a sunset; red and green stoplights look white, peanut butter green and pink looks gray.
Red-green color blindness affects 1 in 12 men (8%) and 1 in 200 women (.5%).
