Color blindness
Color blindness was an impaired ability to see color. Metaphorically, color blindness could refer to a person's skin color or race not being an influential factor in how they are treated or what they can accomplish.

In 2374, Captain Benjamin Sisko fell under the influence of visions from the Prophets and Pah-wraiths. During an illusory 1953, Douglas Pabst told Benny Russell to either burn his own story or stick it in a drawer for however long it would take for the Human race to become color blind. Pabst would not print Russell's story unless he made the negro   a white person. ()

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Medical conditions
Philosophy