Just for fun: pink was traditionally considered a kind of red. Red is considered a warm color. Warm colors are associated with, well, warmth, and heat. In classical Greek elementalism, which influenced later (western) alchemy, heat is the primary characteristic of Fire, and the secondary characteristic of Air. Fire and Air are the masculine elements. Red, and it's variant pink, were primary masculine colors up until the early twentieth century. The "pink is for girls, blue is for boys" meme, ubiquitous in the West, is actually an artifact of an advertisement campaign for... I'm not sure what really. Maybe diapers.
But the most fun thing is that there are so-called scientists who look for a genetic reason for girls to prefer pink and boys to prefer blue... And those frauds manage to get funding!
Okay, I admit it's a bit more sadder than it is funny.