I just re-checked Mac'Aree on the PTR but as far as I can tell there are no changes / additions to the colours there. I wouldn't expect much this close to release, though. I was very surprised to see the fel red one appear in Krokuun.
Darn, I really had my heart set on this black one.
I've become so accustomed to having every pet model available for taming in recent years, unlike the old days where random skins couldn't be tamed for arbitrary reasons. Maybe our kind Dev friend will help us out at a later date and make sure all the missing colours become available.
I want them to make that, but with the pink underside and accent colors from this one: