Quoting chvtec33:
How about Porsche 911 GT3 RS green?
click here
That color works on that car because the body style is aggressive in the first place. IMO, unless the car either looks like that Porsche, or is a racecar, more understated colors should be used. The GVR4 just doesn't have the body style to support such bright colors. Like it or not, it's a four door box. Trying to make it stand out by using colors that "pop" just make it look bad.
I like that olive green on the S2k that KC posted. Civic color is nice as well, if not the same?