I saw there's a blue version, but I was still hoping for another off-white (or two). There's a place in North Yorkshire called Jaunty Jalopies Collectables that claims to have a bunch, but their e-mail address is no good and they've blocked contact through eBay messaging.
The kit seems to be a combination of features from the various cars used on the show and movie. The "high stripe" is accurate for the pilot episode, but the pilot car also had chrome mirrors and side molding:
Thanks, guys! I am still seeing if I can do something about the rear tires without too much drama, if I can I'll add some updated pics. It's a decal I drew up in Illustrator and printed onto clear stock, applied directly over the BMF