The Green Gene — Peter Dickinson

GREEN IS THE COLOR OF MY TRUE LOVE'S SKIN

The Irish were having green-skinned babies, until they all were "wearing of the green" permanently! The Scots kept right up with them and turned green too! And the Welsh, being fellow Celtics, also became grass-colored!

In all the world only one meek little Indian genius had tracked down the wild gene that was doing it. So they called him to the British Isles--and thereby upset the whole delicately balanced green-apple cart!