According to its developers, the paint is the same silver used by Mercedes and the back window and electronic sunroof is borrowed from a Mazda Miata. The wheels look they came from a Porsche, as well. Other than that, the car is basically stock. There's roughly 78,000 miles on the clock and the original four-cylinder and five-speed manual is the same as when it was bought new.
Thanks to David for sending in the tip.