With one grey parent, it can be hard to judge if a horse if "flaxen chestnut going grey" or silver bay. They can mimic each other to a certain extent - it is not uncommon for greys to go darker on the extremities especially before they start to lighten up. I do think in this case silver is a definite possibility, based on the later pictures, but that grey shouldn't be ruled out yet. She is, after all, only a yearling.
Clipped horses, as stated earlier, don't show true colour, so a clipped coat should never be used as an indicator of this.