Sables are the most common color that Poms come in; some are rare (wolf, blue, red, beaver, chocolate) and some traditional (cream, orange). Sabeling is any color (most common is black) with the sable hairs mixed with the base color of the Pom. The true base color is commonly found at the bottom of the back of the ears.
this Pom will likely be a dark (heavy) cream sable...
Sable Poms can mature with different amounts of sable; some very dark (see sample on left) and others are only left with black whiskers as an adult (see sample on right). Both of these Poms are cream sable.
Below are 3 examples of how a sable can change before reaching maturity; it can keep or lose it's black mask and the coat can get lighter or darker.
There are not ANY Poms that have zero changes in color as they mature; it's just a matter as to what degree this happens. During the 1st year a pup will have a drastic transformation, referred to as the 'uglies'. The soft puppy coat falls out and is replaced with the permanent adult coat. Adults are either double coated (2 layers; an inner dense undercoat & longer guard haired outer coat or they can be single (flat) coated. There is no such thing as a triple coat! A great reference for Pom colors (and lots of other info) is The Pet Pom Book, available in hard copy or eBook.