My one now deceased aunt, a blonde, was utterly convinced that the first person to walk in from outside into the house had to be dark haired (which would bring prosperity, good health, yadda yadda) the whole year long.
And that should anyone not dark haired come through the door first, well, I dunno, all kinds of evil, bad luck, hexes, locusts, whoknowswhat, would befallen them.
