I'm still going with a silver bay. I don't think he's a silver bay dun, because he has absolutely zero dun factors. But, I could be wrong. You never know with horses unless you own them and have them color tested.
For everyone that said Silver Bay... You are correct. Pistol is in fact a Silver Bay. Up until this last summer it was hotly debated in a few different places as to what color he is/was. He was first thought to be a darker palomino, then progressed on to being a flaxen sorrel like his dam. This year the mousy grey color has finally started to show on his legs more. The greatest indicator through his whole color change was in this picture. Can you tell me what it was/is? -
We did not, and will not be color testing him to know for sure as he is a grade pony gelding.
I mainly posted this to show how sometimes colors aren't always what you are expecting.