I have never bred for a color or even factored that in. If a puppy has a throwback color to one of his grandparents I humor myself by saying it is a throwback. Once we bred a Maloney bred dog to a heavy Bolio crossed bitch (carrying her Bolio traits) and one of the female pups had a white head and one blue eye. We had re-created Dirty Mary. Or at least that is how we made conversation. I imagine if one had intimate knowledge of a family of dogs over a period of time then recognizing a color in a puppy may be 'inside' knowledge. EWO