According to the original brochure and price list leather was an £940 option on all cars. My white one had rather unattractive hard cloth but that was better than the soft cloth used for the Expression I saw at Oxford.
Regarding colours, there were two greys listed, stone and eclipse, though I've never come across either. I did see a sapphire blue at MK but felt it didn't suit the car.
Another odd thing, the "chrome" trim strip across the dash in the brochure does not extend to the driver's side whereas on my cars it does, and a right nuisance it is as in sunlight it reflects in the screen and annoys!
Finally, the illustration of the standard charging cable shows one with dual connectors allowing charging from 13A or a standard charge point: I wonder whether this cable ever got manufactured, I can see a serious hazard in that the 13A pins will be exposed if the other connector is used and the cable is live. It is described thus: "... you can make use of any charging solutions, whether in public or at home ..."