For God knows how long, pink has been associated with girls and blue has been associated with boys. And it's not just that those colors are imposed on them by society . . . across cultures, girls gravitate toward pink and boys gravitate toward blue.

--A team at Zhejiang University in China ran a study on why the genders prefer those colors, and they have a wonderfully stupid theory.

--They believe it goes back to our hunting and gathering days. Girls like pink, and also purple and red, because those were the colors of berries they'd try to gather. Boys like blue because a blue sky meant good hunting conditions. Now you know.

(Daily Mail)