Can a doe get pregnant by two bucks?
My doe (hand bred by me) had a kid that is black with brown trim, just like her sire. Her twin brother is tri-colored, with spots. My other buck's sire was spotted. The breeder of my black buck swears the spotted one must be my other buck's baby.
With all of the colors you mention, who knows who the sire is? You will find that color patterns are not predictable.