As I was a part of the GSPCA petitioning for black to be allowed in the AKC standard I will share some information with you all that was shared with the membership and such as well. All I have ever asked is that people be educated on the matter and make their decisions based on facts and not just emotion. Which can be hard to do.
-The standard in Germany in 1902 did not have a disqualification section in it. The first time black is mentioned in the German Standard is in 1933 and it is an acceptable color. “By 1933 it was the qualities of Angus v. Schwarzatal (Pr.K. #102) that persuaded the German Club members to allow the blacks into the studbook on equal footing with the brown dogs.” The German Shorthaired Pointer was originally recognized by AKC in 1930; but there is no record with AKC or the GSPCA of a written standard being in place yet at that time. The first known written standard for the GSP was in 1935. Even the 1935 standard did not have a disqualification section in it nor did the 1946 standard. The first mention of black being a disqualification in the AKC GSP Standard was the 1976 standard per the 1975 GSPCA yearbook, p.233. (The GSPCA nor AKC can provide any proof of a standard when the breed was first being introduced to AKC back in 1930. Unless someone on here was part of all that back in 1930 and can provide our standard at that time. I would love to see it

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Remember also that if you import a dog from Germany it can be registered with AKC. So in AKC eyes the German dogs are no different than our American dogs. Also black can be show in every registry in North America except AKC (CKC, International, UKC) and many of the blacks are titled in conformation in other venues. Just food for thought.
No breeder IMO should ever charge more based on color. Heck I don't think they should charge more based on sex of the puppy either.
My blacks have been called Weims (not sure exactly how that fits), dalmatian (I sort of can see that one), Blue Tick Coon Hound (once again can see the logic there), one person even said cattle dog/lab (again I can see where MAYBE that could work). Just have to take it with a grain of salt, understand why, where and how black came into play and know why you like them or don't and stand behind your belief. The only thing I can't stand is being talked down to because I have a black GSP by other GSP people. We all have our preferences, we all have our likes/dislikes and in the end we need to treat each other with respect.