I have heard that cars located near the ocean, and get salt that is left on the roads from salt-spray, are the worst! On that Charger, the frame and underside literally looked like cottage cheeze!!! :-(
That orange should look great on there. Orange falls into a class called "excitement colors". :-) Also, metallics tend to look "richer" than solids.
Are those stripes the white ones I see on your rocker panels?