The BMW Individual color Ametrin Metallic debuted on the X7 in September. But it wasn't until the all-new M8 Gran Coupe adorned the purple-ish hue later in the year did people take notice. The deep shade draped atop the sleek lines of the 600-horsepower four-door do the M8 Gran Coupe serious justice. Though if you really want it, it's a $1,950 option.