"Some" indication of the amount of silver your kitten will exhibit can be (sort-of) "determined" at birth. This is noted by the amount of silver on the face. The more silver on face, the lighter he/she should be as a mature cat. The darker the face, the darker your cat should be at maturity.
The photos below are all the same kitten (black/silver). The silver really shows through and we see the STRIKING & AMAZING Black/silver!
In a RED SILVER please note how the color will get lighter as the undercoat begins to grow.
Thanks Bobby for letting me post the photos of this GORGEOUS boy!
Black/Siver DAD to all my kittens
Black silver BIG DADDY
Better view of DAD's side color
DADDY as baby! I think he is about 6-8 weeks here. Notice how dark his coat is
Mom...not looking happy about the holding posture!
Nice side view of Sofia..Black/silver tortie tabbie
Both of these parents are black silver. I am amazed at the variety of colors they produce! But, almost all of their kittens will have silver.
Here is a snap shot from our black SMOKE. Very nicely shows 2 tone hairs. The pigment is only on the tips and the underside has no pigment!