Donkey genetics are harder than horses because there just isn't much information out there for us to gobble up. Clearly it is maximum expression of a white pattern, or possibly some of that recessive ivory color they talk about - I think this because you said blue eyes. I have no idea what paint/pinto white patterns are in donkeys, but Ivory causes blue eyes.
May possibly be dun as well since both parents appear to have it. Although you can't tell because of all the light coat where the patterning would be.
I also have no idea how the grey vs bay works in donkeys. So I will call your baby: Spotted Ivory with possible dun
. Weird, but that is how I found donkeys do color naming.