Your paint choice is going to project very similar to the top half of this cruiser
Obviously dependant on amount and depth of pearl added to base coat.
Dependant on resources 'are you you looking to save on repainting door jams, inner boot lid and internals etc', I'd have a look at going a nice metallic silver 'as it will still pop for a cheaper price, I've also found that with some of these more interesting paint types chosen the effects wear off in your own eyes pretty quickly', and saving yourself the shitstorm of trying to match a car with such a contrast.
Depends on what you're trying to achieve, what resources you have available to you and how much you want to spend.
There is of course the forum favourite Gun Metal Grey
