3. As Cilia mentioned above the colour of moogle poms indeed seems to differ depending on their location, with the moogles of the First apparently having
blue poms (as depicted in the SHB opening trailer, in the scene in the Crystarium moogles with blue poms can be made out next to the aetheryte), the latter very much in keeping with the First's depiction as being a
'bizzaro-Hydaelyn'. Of course Square Enix Visual Works (who actually are the ones who produce the CG opening movies, not the FFXIV Team themselves) often do make mistakes due to using innacurate or early information or designs that change after the CG trailer has already been produced (Hraesvelgar appearing as the antagonistic dragon during the Battle of Ishgard instead of
Nidhogg who it actually should be in HW's opening is a well known example of that), but I'm pretty certain in this instance, it is indeed accurate, and that the moogles of the First
do have blue poms.