Melanophobia

Melanophobia (from Greek melano, "black") is fear of the color black. The fear may develop due to the fact that black symbolizes mourning, evil, plagues, and death. People who fear dirt or becoming dirty can also cause this color phobia for people who associate dirt with black. Sufferers of melanophobia avoid things that are black; encountering or even thinking about the color can cause. Since black is very common, sufferers may have difficult time to avoid seeing black, often resulting in uncontrolled anxiety when there are a bit of black around. This makes life lot more challenging meaning they would need special ed in school for treatment.

They may also have this because of black holes.