Well, first of all...
No reputable breeder is going to let you pick your puppy. They pick the puppy that best matches the temperament/gender you need. They know the puppies best - their drives, energy, habits and social standings.
Most reputable breeders are going to laugh at you for a color preference. It's not what you should be worried about.
Most are not going to give preference to you (for first pick) because you are not working the dog. Preference in working lines always goes to working homes.
That said, Boeselager kennels breeds east and west working lines, IIRC. Wildhaus breeds European working lines- Czech / DDR mostly I believe. Both located in Michigan. You uploaded some DDR lined images, so I figured maybe you aren't picky between west/east?
Danielle, owner of...
Fraggle Rock Collars
Fraggle Vom Richcreek CGC CA
Red Dog's Reconnaissance Man CGC
General Patton Vom Winter Storm