Hi Chris
I hope you don't mind, I added this comment to your BAT post and then thought some others here might appreciate the comment ......
@HBChris, your friend the geek here
Although some people claim 12 in other colors, that is a little misleading as some of the early cars, including my chassis number one, were designated “special colors.” In fact, after much research (BMW was no help), chassis number 1 was painted Chamonix. I suppose, as the first car, that was special

…….so no doubt a few of the first dozen cars built in 1973, also got that designation, leading to the misleading 12.
Now to the actual cars made in different colors
1 in Taiga = Green
1 in Schwarz = Black
1 in Tampico = Beige
1 in Inka =Orange
1 in Pastelbalu = Blue
1 in Jadegrun= Green
and 1 in Verona = Red
So until proved otherwise, my number is seven cars in non-Chamonix or Polaris and five, maybe just like number one, called “special” but in fact not so in its paint color