The referral upgrades was basically a one, maybe two weekend special, that got away from them. If you had gone in looking for a specific car, which they didn't have, they could sell you a similar car, giving away 2 of the 3, paint color, rims or interior color. The whole thing was a push to deliver as many cars as they could before 9/30.
BUT, salespeople begin to use the "deal" willy-nilly and broke the intent of the deal. Selling custom cars with the freebies. Some received the deal, some didn't after that part was figured out by corporate. I'm sure Tesla learned a great deal as they "ate" a bunch of free paint and rims, and future incentives will be better organized.
You walked in looking for a car, found a car, and were happy.