I've just been through a similar quandary over my colour selection. Having ordered Meteor grey (without having seen it in the flesh, or a decent photo), I yesterday amended the order to Quartz grey (still with Magma). Whilst I acknowledge the comments re. contrast with the door mirrors on darker cars etc., once I'd seen some more photos of Meteor cars, it just wasn't gelling with me. My ideal colour would be a non-pearlescent 'steel' grey, somewhere between Meteor and Quartz (as a rule, I dislike silver cars and Quartz is a little too close in some light) but alas whilst BMW offer the precise colour I'd choose, Audi don't!
I think that the lighter shades and bold solids do in fact show up the car's lines and stance to bst effect, so I hope that I've made a good choice.
Hmmmm. Can you imagine a woman reading this thread? How she'd laugh......