There are a number of different colors on the inlays.
Article about them should be in current Poker Digest.

Mardi Gras 1972 Yellow
Carnivale 1976 blue
Festivale 1978 white
Tropicale 1982 green
Holiday 1985 red
Jubilee 1986 brown
Celebration 1987 purple
Fantasy 1990 orange

There is also a peach inlay.