Himalaya - I think I'm getting more sceptical, not less. I do appreciate you trying so patiently to explain. It may well be that my non-scientific background is too much of a problem here.
The pink thing - the reason people mention blue in Victorian England is, as I understand it, because the researchers thought they'd demonstrated an underlying truth that happened to show that the current marketing strategies weren't just a modern fad but an ancient indicator of underlying preference. Had they bothered to acknowledge the earlier preference for blue (which does come from somewhere - it's not just imposed on children, it's imposed by a society who associate blue with the Virgin), they'd have sounded less silly. But you are giving them too much credit - they simply didn't know of the earlier trend and thought they had demonstrated something that had been a social trend for much longer.
The second point about pink is that it is that most berries aren't pink, though many are red, and many are blue, purple, black or green. Many poisonous berries are red, too - more than any other colour I can think of. It could well be that sensitivity to the shades of this colour were useful evolutionary adaptations. But ... so what?
Simply making the suggestion that there may be a small innate female preference for pink and this may have to do with some small amount of the food humans once depended on, to me at least, is not science, it's a guess that could not possibly be supported. It's interesting to suggest, but how could any stronger case ever be made?
FWIW, I don't think I ever said acuity for pink could have nothing to do with picking berries - I'm not going back over my posts to check and if I did, sorry. What I have said several times is that an innate preference for pink explains very little since few berries are actually pink and many are of other colours.
In the absence of any stronger evidence than 'hmm, some berries are pink', it's just a guess. And you have not provided any stronger evidence.
The bit of evolution that, for me, was taught at primary school, was that things we and animals eat, evolve to suit us and the animals. I don't quite follow how this requires knowledge of genes, but maybe it does? 
I was taught it in quite a simple way though - we just read about lots of examples and listened to David Attenborough a lot. But you are right that perhaps I'm missing the more complex explanations and maybe if I understood these, I would understand more.
Are you holding back from giving any evidence other than 'well, some berries are pink' for the theory above because you know the science is too complex for me? I'd suggest others might want to know if there is anything to be said, there are loads of proper scientists on here.