I'm not too sure Dickens isn't a sable merle, but I would never have suspected it when I got him, because for his first five months he was a very, very light brown color, until finally all sorts of colors and shades started coming out in his coat, including polka-dot-like spots on his ears. His father was a blue merle, and surprisingly, there were seven pups in the littler, all listed as sables. Some of them ought to have been merles, I think.