Thanks Joey. I didn't realise that Sophisto Grey II is no longer Xirallic. In my lease company configurator it still shows as Xirallic and for a while I'm sure that on the BMW configurator it was Xirallic but I just checked and it isn't any more! The 530 used to come with free Xirallic paint but it looks like they've substituted that with metallic (oh and they throw in ambient lighting to make the £8.7k price increase over a 520 more palatable)
So Imperial Blue is ahead again