Yeah but note this is also a huge stereotype. Like with a lot of differences between men and women, the difference isn’t that big and there is a huge overlap between men and women. On average men see a little bit less color than women, but this doesn’t hold up on an individual level. And with the huge overlap it isn’t by definition every woman sees better than a given man. So depending on the individual it’s perfectly plausible the man in a couple actually has better color vision than the woman.