Your insurance has to put you back in the same situation you were in prior to the incident. You bought acar of specific colour and spec. We all chose what we want. Presumably you bought at a premium for that combination and that's what they insured. You expect that, not just any colour and spec that they happen to find lying about in some second hand car sales. So, on that basis they will of course pay to have the one they found done to your colours. Like hell they will - easier to come back with a fair offer so you can get the same spec, mileage and history.