Ok...so an interesting development...
After my change from Quicksilver to Blue this morning, I was messing around with the app and found that I had a VIN allocated to me via the wall charger section of the app. And surprise surprise, it was for the Quicksilver.
So I rang Tesla to find out what is happening...
Basically, I had been allocated a VIN for the Quicksilver but it has been hidden from the app/website. So my colour change this morning hasn't actually gone through, because you can't make a change to your order once a VIN has been allocated.
The Tesla guy said it has all happened over the weekend so we won't see VINs or invoices until next week.
Next step - find the ship with my VIN...any tips on shipping companies to search?