Personally, I'd stick with the original Gunmetal. LOTS of EV2 cars at shows...and I actually like the gunmetal better anyway. (and it's different)

Are you planning on selling the car? If the car is original,changing color will hurt the value.
I guess a better question is... if you're gonna flip the car, why bother restoring it in the first place? Sell it to someone who likes the car, and let them decide.