According to Parti Poodle World:
Partis and Phantoms are not the only multi-colored Poodles in existence. While the exact history of these other colors are not known, these colors are not new or recent either. Brindles in particular have existed since at least the 1950's. Sables are another color in which the inheritance and history is not quite known as of yet. The Sable pattern isn't as noticeable when a Poodle is cut short. But when the hair is left long, the bi-coloring is much more obvious. The hair at the base is one color and along its length it changes colors usually with brown or black tips.
http://www.partipoodleworld.com/Colo...therColors.htm