Outer Space is a color that reflects no light in any part of the visible spectrum. This often leads into associations with the unknown.
Black, night and other forms of darkness have associations with theft, crime, dangers and evil. In many cultures, black is the color of evil, and represents evil demons.
Death and Mourning
To mourn the loss of a loved one, people in the Western society often wear black to a person's funeral. This contrasts with several Asian cultures wearing white to funerals, or African cultures using red. Lavender is also a color used for mourning.