Gender stereotypes - History of Pink and Blue

Did you know that pink hasn’t always been a colour for girls, or blue for boys?
In Michael Kimmel’s outstanding Manhood in America: A Cultural History, he points out that clothing wasn’t colour-coded in America until the early twentieth century, before which little boys and girls were dressed pretty much identically. Even when people started pushing for more gender-specific children’s clothing, there was a huge debate over which colour to assign to which gender. It started out with boys wearing pink or red because the colours were seen to indicate strength, while girls wore blue because they were “flighty” like the sky.

http://www.gender-focus.com/2010/09/23/pink-for-girls/