Leaked photos of the 2013 Bentley Continental GT Speed Convertible have hit the Web ahead of its official debut at next month's Detroit Auto Show. Details are scarce, but it's expected the vehicle will feature essentially the same specs as its hard-top cousin's. That means power will come from a 6.0-liter W-12 engine mated to an eight-speed transmission, driving all four wheels and producing 616 horsepower and 590 lb-ft of torque. Bentley estimates a consequent 0-to-60 sprint time of just 4.0 seconds, with a top speed rated at least 200 mph. Sure it's fast, but that purple paint job ensures you won't miss it zooming by. See more in the gallery below.