Because we only wear black until they develop a darker colour.Nomanslander said:I don't know, why is black affiliated with being a goth or cool.
Yellow is associated with poison (ladybirds) and urine. Red is blood. Blue is calm because of the sea/sky. It's basic imprinting.
Pink/Blue became that way because of basic imprinting after WW2. Many reasons why it could have been but it's perpetuated by social reinforcement.