The blue is part of a special edition from 2000 that got the nickname Daytona Beach. There were four - turquoise, chrysoprase (green hard stone), pink MOP and yellow MOP. Each came with matching lizard strap and box, notebook and wallet in the same hue as the strap. Unpopular at the time and yet now becoming more sought after. When I bought mine all the vintage guys laughed at me...now they’re trying to buy them! 
