Baby Elderhorn variants?

[Sffcorgi]

If you're a Hunter and you go up to the peak of the mountain behind the Lodge, there's three Elderhorn calves gamboling near the entrance to a cave. Now, it's terribly cute, but the point in mentioning it is that there's three different coat colours of Elderhorn.

Has anybody ever seen anything about the other two being offered as battle pets? Colourways are not uncommon, as you know, and I wouldn't mind having more of these little guys.