Thanks to everyone for their opinions. Decided on Platinum ice with oakham interior. How predictable I hear! My wife in the end said she'd be ahppy whichever colour, this is like almost double the price of any car we've ever owned before!
The interior was one decision which we at least both agreed on. In the end I put all of the cleaning and stone chip issues to one side and decided on what I felt made the car look the best in my personal opinion. I felt the curves and creases in the body work over the wheel arches and above the door sills in particular were to a degree lost with the black whilst the silver paintwork reflects the light in different ways in these areas therefore making accentuating them more. I also felt that the black paint work, the wheel arch and then the black of the tyres drew attention towards the space in the wheel arch making the wheels look too small, which unbalanced the side profile of the car. Whereas the silver contrasted better here and therefore took your attention away from the wheel arches.
Anyway we're all happy and thanks again, this is a really helpful and useful source of information/assistance.
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