Ray,
The 29 sport coupe is not painted one of the original colors Ford used in 1929 (Mountain Brown, Rose Beige, Vagabond Green or Andalusite Blue, Thorne Brown or Bonnie Gray). I suspect one of the previous owners just selected a color he liked to paint the car. I did just that back in 1964 on my 29 sport coupe when I was in college and didn't have a clue as to what colors were originally used.
Rusty Nelson