The Weimaraner breed was included in the mix that came to be known as the present day Doberman. They refer to that color in Dobermans as "fawn", there is also a blue and the more common black and tan, and red and tan. A puppy I got was in a litter that had ever color possible, she was the fawn color and the largest female in a litter of all females but one male. She was the most beautiful lavender color with the tan coloration where it is normally seen on the rest of the breed. I had a vet argue with me about her being a Weimaraner at the time because I did not initially want to cut her ears, she had her tail docked very early. I saw no need to cut her ears and this vet basically talked me into it, otherwise she would be confused with being a Weimaraner, which wasn't a big deal as far as I was concerned. This variation is considered quite rare with only about one in ten thousand born that color, its a throw back in their genetic line. Similar to the way the Rottweiler lineage will show up in outsized dogs, referred to a "Gladiator" Dobermans, those guys can reach upwards of 120lbs with the Doberman speed and Rottweiler strength. The English Greyhound was where they truly got the speed and endurance bred into the Doberman line. Conveniently Herr Doberman was a local Sheriff and also doubled as dog catcher, in his spare time he tinkered with developing a good "Police Dog". Weimaraner was a good addition in my opinion and probably responsible for the good hound nose and temperament.