So I looked at you picture a long time. Couple things....first, green has to be there somewhere but it needs to be a cool green...but retro. What came to mind is fords new legend lime metallic 05 Mustang color. Second, your car has a very sharp body line (splitting the car in two) from front to back...to me that screams two-tone!!! I would say the other color has to be light, like a vapor pearl silver. Then you need to break the two colors up with a very dark color which right off the bat I think should be black.
So this is just my opinion but if anyone out there has some photoshop skills...lets see it. I think it would be interesting...and not in the bad way.
Otherwise my vote is the whole car in Legend Lime Green Metallic from Ford because that color is pretty cool and you have to see it in person.