I was out of town for the last 4 days and tonight I saw a post by Norm Clem about a Purple Regent Roulette. Well, Norm I have the 8 colors you showed in your post and two additional colors you did not show, a total of 10 colors. See scan below.

Take care,
"Mr. Roulette"

P.S. Three of the chips are notched samples, probably back-up colors. I doubt if more than 7 colors were actually used on the tables.