Originally Posted by Poseidon
You can get a grulla Paint just as easily as you can get a grulla Quarter Horse. It's not a very commonly seen colour, but entirely possible.
I know grulla is considered "rare" in Quarters (and that's why I thought Paints as well), but it's EXTREMELY common in Colonial Spanish Horses and other breeds. IT wouldn't be likely that the dun would have come form the draft side (unless it was a Fjord, but no Pangare so I don't think Fjord)