Dennis,
Thanks for the compliment to the gang! I think the biggest boner statement in an otherwise great display of one of our marque, was that it was "hard to find information"........... Wayne stepped on his weenie here.....!!! 
I was gonna say something else, but it could have been construed as "political in nature".......
There was/is a couple of versions of GOose color charts.....from the factory advertisement with one of each color on each page (need to go back and look at it to back up my words here....) or at least "most" of the colors that we see most often, to a full scale color swatch collection of many more options. I think this latter piece came out late in the game......if memory serves me.... It is interesting to see what was available......
BUT, IMHO, I would venture that most were painted by the factory for the dealerships.....not necessarily direct customers......from the original stories I have heard, most saw the car in the dealership first.....and bought it. Again, just my opinion.....
DeTomaso would also paint to fit a customer.....if the beans were there! Perhaps this happened more in Europe where the dealers were closer to the factory.....
As I also stated, Wayne went on to blather about black and maroon being very popular colors......which I find contrary to what we know is out there!!!
Ciao! Stay safe yourself! Hope to be able to see youse guys soon!
Steve