After watching the CS again I would have to agree with the OP. While the CS is extremely amazing, the only questionable part is the blue flame that is textured in this particular scene. It is not the color in question, but rather the way that it is layered onto the character models after.
On a side note. The CS in FFXIV are well above the typical if not higher end CS's, I would imagine it was particularly difficult as it seems they do most of those parts from actual game play. Either way I still loved the CS and enjoyed watching it again.
