This site is going to be dedicated to Merle APBT's - Rather they are Blue , Red ,Black , Chocolate or any combination. The Merle Gene in the American Pit Bull Terrier is frowned upon. People say the coloration comes from introduction of other breeds - such as the Catahoula or The Alapaha Blue Blood bulldog  . But other's say the coloration has always been in the APBT's background. However the Merle coloration came to be, it's been bred out and only the gene remains. And it's an eye catching coloration on any dog, but outstanding on an APBT, since it's seldom seen.

I've spent many hours researching the Merle gene and the defects it can and will produce if misused.
I own a Louisiana Catahoula Leopard dog who is the result of a Double Merle breeding, She suffers from Corectopia and Microphthalmia,but is not deaf. So the Double Merle gene is vicious and should be avoided at all cost. This is the reasoning behind the UKC and ADBA not recognizing the Merle coloration. I think that if you have a pedigree on the dog and can prove there has not been a Merle to Merle or any cross breedings, then that dog should be sound enough to be accepted into their Association.  The color on a Dog's back does not make the dog.

The "UKC" and "ADBA" are the two main registries for the APBT and they both have made

Merle a disqualification.
The UKC says the Merle gene has never been there yet the ADBA says it HAS always been there.
This is directly from " ADBA " website :
"The Merle Gene has existed in the History of ADBA registered dogs - These dogs were culled and not used as breeding stock - In talking to breeders and doing additional research we have found that this color pattern is "Not" new to the breed." --

O.kay, ADBA admits it's always been there; Then why are these dogs discriminated against!?!?!
Well, Give a round of applause to Howard Madison of  Platinum Kennels
Thanks for screwing things up Mister Madison!