I don't want to offend anyone when I say this, and bear in mind that I like black interiors.
BUT -when you can have ANY paint colour, think long and hard before picking a mass produced car colour like metallic grey.
I'd have to agree with you on this one Dave.

Why have one colour when you can have them all
I know what you mean, but then I wont get to see the car before I decide the colour, and I know from experience that paint is terribly difficult to photograph.
Another night of contemplation awaits. Is it too early to start on the whisky?