The "Sang Bleu" is set off by its unique two-tone color combination that isn't the result of opening a couple new cans of paint back at the Bugatti factory in Molsheim, France, but rather combining two materials: carbon fiber and aluminum. The shiny parts are, of course, the al-yoo-mini-um of which we spoke, but the royal blue you see is a specially tinted carbon fiber. The only other differences between the "Sang Bleu" and a normal Grand Sport are that the rear airscoops are also body color, and the wheels are a unique design with a Midnight Blue and Diamond Cut finish.
Only 20 standard Grand Sports have been ordered and far less actually delivered, so the "Sang Bleu" stands as the rarest Veyron of them all right now. There's only one and Bugatti doesn't mention anything about it going into limited production, but considering the brand's penchant for making special editions, we expect the "Sang Bleu" will be available for anyone with anyone with a couple million bucks to trade.