Dude... hazel eyes change color. My eyes are hazel, and sometimes mine are that green, sometimes they're honey, sometimes they're goldenrod, sometimes they're forrest, and sometimes they're a mix between those colors.
And my little brothers are more crazy. They're from honey, to gold, to light green, to blue.
What a stupid thing to say "hazel to green" like that's odd. Besides, like someone said, that pic is from back in the 70s when everything looked brownish in pictures. I think he always had green-eyes. As far as I remember he did.