I'm in the position whereby I've just received notification from EST that my loan has been approved. I'd supplied details of a model 3 SR, in blue, with 19" alloys, coming to £42,940. The loan amount is actually for £28,000 interest free. Now that the configuration tool online allows for a white interior on SR I'd like to add this option on. Does changing the final invoice value mean that my loan offer needs to be reprocessed? Also, what's Tesla's position on changing an option after the £100 has been paid for a spec?