Dear Mav: What colour applied to you would make you stupid, now that heavy metals are banned from kid's paints and crayons? I was reminded of this resterday reading History of England, in which Macaulay tells of Charles II having a hobby of performing chemical experiments, including mercury. Macaulay did not perceive the possible relevance of this in the King's subsequent personality change and downfall. I suspect he was "Mad as a Hatter."