Well, my point is that eye color is genetic, and genes go where people do.
The video on hazel eyes seems to indicate that brown eyed and blue eyed people in the Iberian area seem to have first intermixed 8 to 6 thousand years ago; and that’s where the hazel eyes started. Then people moved around.
I've been crazy for genetics since I first learned about Mendel, when I was 15, so this is not a new thing fro me and I have done pages of this kind of thing for as far back as I can go, down to the present. And both I and the progeny also married different colored eye individuals and OUR respective progeny has followed the past's; not another hazel nor green eye in the bunch.