Pink was the Color associated with Boys
Ask a girl about her favorite color and her reply would be ‘pink’ while boys would go for ‘blue’. However, these colors were not always associated with their specific genders. In fact, pink used to be the color of the boys until the 1940s as it was considered more sharp and distinct. Not surprisingly, blue was associated with girls during the time.
Nobody knows how or why the switch occurred but it just did and the boys got the color which is liked by both genders while the girls got the color which is hated by all adults of either gender.