Uncle Jesse,
The color is what is known as blue merle. I have seen aussies, shelties, and border collies, that are that color. Aussies are great dogs, too, and I would love to have one. All of the herding breeds have the instinct to herd whatever is near them, but it is stronger in some than in others. They are all great dogs, but they have to have a job to do or they will make one up, LOL!
Steve