The latest story features colour vision in us and in rhesus macaques. It is based on observing these monkeys in the wild.
An article in Science explains:
“A common genetic variation makes some females have three types of cone cells and others have two. Studies with captive macaques has shown that trichromatic females are faster than their dichromatic peers at finding fruit.”
The article moves quickly from fact to fiction: We have colour vision because some macaques evolved this trait.