What color is this horse? Silvery hairs?

This is my friends horse Comanche his coat seems to be a different shade every year and were undecided on his coloring. Sometimes he looks bay and sometimes he looks dark chestnut one year he had a beautiful silver coat that was almost grulla like. He is twelve years old his father was a black appaloosa with a blanket and roaning and we aren't certain on the mom's coloring. Recently legs that were dark have sprung up with silver hairs almost looks like he decided to have a sock. What color is this horse lol? And what would cause his legs to become silvery all of the sudden?
Hope you could help its always been a mystery to me and comanches owner on what color to call him. Thanks :-D

He looks just chestnut to me. The changes in color could be entirely related to Lp and he could be starting to varnish. Varnishing can start at any age, unlike graying with starts immediately.

Oh I see we figured he was dark chestnut but the random hairs threw us off
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Chestnut horses will usually be paler at the hoof, so that's pretty normal. It's the sooty that is making the hair there appear silver rather than cream.

Definitely a sooty chestnut

Nice example of a sooty chestnut actually. Most people would mistake him for a bay or buckskin

We were positive he wasn't bay because he had no black points, though let me tell you he looks like a bay sometimes, and people often call him a bay but we were more confused about that he has a different coat color every year it never stays the same and the new silvery white hairs that showed up out of no where.
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If I find a pic from a few years ago ill post it he looks like a different horse
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Is anyone else wondering about the possibility of Appy genetics stuffing around with the base coat? He's not spotted but OP says his sire was.

Otherwise, I agree with everyone else, this horse is chestnut.

I think appy genetics are playing a part here
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