This mares color has always confused me. She looks chestnut but in some angles and lightings she looks red dun, i wanted y'all's opinion on it :)

I would say she's chestnut. There's countershading on her spine that looks like a dorsal stripe, but everything else about her looks exactly like a chestnut to me!

Looks chestnut to me. She could have nd1 which is a gene that causes a non-dun horse to display the primitive markings that a dun horse would have but it won't express the dilute, however I doubt she has it lol

She has very faint dun markings, darker knees, lined dark ears, a very light dun line, but id still say shes chestnut

Agree with this

She looks more chestnut to me.

Chestnut but could easily carry ND1 or whatver primitive gene it is that isnt actually Dun