Silver is not actually a color but a diluting gene that fades darker colors. In the case of silver poodles, it is a black poodle with two copies of the dilution gene that turns them silver. Silver poodles are born black and the first signs of silvering appear between 4 and 5 weeks, usually on the feet and muzzle. The poodle will slowly turn more and more silver over the next two years, though often the ears and tail will remain darker. Silver poodles change tone from dark gunmetal grey to a light silver and can look different with every groom!
Silver merle parti puppies are the same as silver merle except they have patches of color on a white background. Like the silver merles their black fur will fade to silver. Like any parti puppy, the amount of colored patches can vary and some parti puppies can end up mostly white. As with any merle, there is a chance to have blue eyes.
Cream parti poodles have cream colored patches on a white base. The colored patches are much more apparent when the puppy is young and as it grows older most of the cream patches will fade and the poodle will appear mostly white, often with a bit of cream left in the ears.