I do know that GSD pups color can change alot the first year.
Where do you live? In the USA, if you are going with a 'responsible breeder' (Things to look for in a 'Responsible' Breeder) they will be able to show you the parent dogs and explain both their breeding program and what they expect the puppies to look like as adults.
MACH3 Bretta Lee Wildhaus MXG MJG MXF MFB TQX HIT CGC TC
Glory B Wildhaus AX, AXJ, XF
plus Miss Osin Blue Wildhaus
"Nothing new can come into your life unless you are grateful for what you already have. ~ "--- Michael Bernhard, gratitude