Just my .02 but with what looks like brushed centers on the wheels I would go with a middle to darker shade of grey. The Sterling Gray BMW color would look great with those wheels. I am having a hard time with color right now as well. I have a 68 and my forgelines have black centers. I was looking at the Atomic Silver but wondered if the color was too "New" for the older muscle car? I also looked at the Porsche 918 Liquid Metal Silver. GOOD LUCK!!!
http://www.roadandtrack.com/new-cars...roof/?zoomable