Assuming they do not build to order....
They will build a certain amount of each variation probably based on stats. So many White/Black, less Red/Black, even less Red/White, etc Then they match up what they have built to the queue.
So while we have order dates that have been turned into VINs the actual 'edge' of when this has happened is a saw tooth rather that straight cut off date (so might be 9/12 for LR Blue/Black, 10/12 for White/White, 14/12 for White/Black). We just dont have the volume of people in the TMC forum to be able to accurately assess where that is.
The list I make gives you an idea of where they are up to. For a Blue/Black LR that should be 9/12 so you're probably front of the queue. If you're Blue/White LR that should be 7/12 so you're probably very close to, if not the, front of the queue.