Here is a mystery color. The seller does not say what color it is. Anyone venture a guess? I dare say that if you are one of the chip purists who never "clean" a chip, you will never know its true color.
http://cgi.ebay.com/Vintage-1935-COUNTRY-CLUB-Roulette-Chip-LAKE-TAHOE-HTF-/400212953424?pt=LH_DefaultDomain_0&hash=item5d2e8d0950
Here is the ebay chip:

The ebay chip is one of these colors:

Just to give you an idea of what you are up against. I bought this Fortune Club think I found a new color - Gray/Khaki!!!. I then "cleaned" it. Below is the before and after: