The eyes have it.
Meg says: "My eyes are blue; they change colour when I'm happy or sad or angry or tired". I'm convinced mine do, too, though I'm not sure that's scientifically possible. Trouble is, I don't know what colour they are in the first place. I've variously been told that my eyes are blue, green, hazel or grey. Jonathan and I were discussing this last night. "They're ultramarine," he said, "or battleship grey."