ColorThat is straight off www.akc.org.The Labrador Retriever coat colors are black, yellow and chocolate. Any other color or a combination of colors is a disqualification. A small white spot on the chest is permissible, but not desirable. White hairs from aging or scarring are not to be misinterpreted as brindling. Black--Blacks are all black. A black with brindle markings or a black with tan markings is a disqualification. Yellow--Yellows may range in color from fox-red to light cream, with variations in shading on the ears, back, and underparts of the dog. Chocolate--Chocolates can vary in shade from light to dark chocolate. Chocolate with brindle or tan markings is a disqualification.
Somebody, as Topsy said, ain't tellin' all they knows . . .
They are registering them as chocolates, they appear to be a mutation of Chocolate, not of black. I'd quote from this site, but they've disabled all ability to plagerize them... ;~D
http://www.silverlabs.com/controversy.htm#.
Dang, they sure are picky.