Different but related: Some years ago, there was the story around that 'The bees don't like the black plastic queen cells' (plastic queen cells for grafting into). Me, I immediately thought "Huh, how could they know in the dark?" But it turned out to be true, but not because of the colour. Seems a batch of the cells had been moulded using a different release agent (?) in the moulds, and it was enough subtle smell difference to make them unacceptable... --------------------------------------------------------- Nick Wallingford, President National Beekeepers Assn of NZ email: [log in to unmask] NZ Beekeeping: www.internode.net/~allend/nz/profile.html ---------------------------------------------------------