"It would be pretty ridiculous, himalaya - because you'd be positing that women evolved to pick pink berries (like what, exactly?) to the exclusion of blue berries, and that society buried this evolutionary trait until the mid-20th century, at which point it suddenly resurfaced with women liking pink again."
LRD - No I'm not saying that at all. I am saying that i dont think it is at all ridiculous to think that the human (both male and female..) ability to notice and be attracted to pink/red hues might well be an evolutionary adaptation for finding ripe fruit (ripe blueberries/blackberries are rosier - their ripeness is signalled by the same pigment as red ones). Dogs and cows, for instance that dont eat fruit don't find pink interesting.
Meanwhile for plants, producing their seeds inside a capsule of chemicals that reflects light at just the right wavelength to attract certain animals to eat them at the right time that they need to get "planted" for the next season is also an evolutionary advantage.
... And isn't that amazing?
I am sure that girls in the 21st century choosing pink clothes is largely a result of marketing, thats not a mystery.
As I've said I have no idea if women are inately marginally better at picking out pink objects than men, but if soneone found they were then considering a link to food that humans evolved eating would not be so obviously ridiculous.
As far as I can work out when people say that this cant possibly have anything to do with colour vision because argument "the favoured colour for girls used to be blue" they are referring to European/ American 19th century fashion trends -- which is a bit narrow a lens for thinking about human evolution.