Did you mean pigmentation on the outside? because most gums are pink--but outside lip color and other membrane pigmentation can be different. The Chow-Chow, for instance should have a blue/black tongue.
Poodles are supposed to have black pigment on the outside of their lips, and around the rims of their eyes. This is for all colors of poodles except brown/chocolates. A brown or chocolate poodle will have liver pigmentation on the nose, lips, eye rims, and eye color. All other colors have to have dark brown eyes, black noses, and black or very dark pigmentation on thier lips. Their skin should have dark pigmentation. A poodle with pink skin, or wrong pigmentation is considered as having a fault. For instance, if a white or cream poodle has pink skin or brown pigmentation, it is a fault, and they sould not be bred. My Standard has great pigmentation--his skin darkened to a nice dark-silver color after his adult cut. He has nice dark black lips, dark eye rims, and dark brown eyes, and a nice black nose.
In AKC parti poodles are not allowed, but I have seen some nice ones in UKC.
Karen