This has probably been put out there, but especially with the latest trailer showing Solution 9 vehicles, it goe me wondering:

We see very specific coloration in certain “magic powered” and “magic charged” things.

Like, in the “neon highlights”, we see:
Allagan tech is typically cyan (as is Ironworks; not sure if it’s identical in color)
Garlean has red
S9 is purple
The “Ark” on the mountain top near Rhalgar’s Reach is green
Azys Lla has a variety of coloration

Crystals also have some color:
The yellows from bahamut
The big red in Corthas
The blue Crystal tower


This has me wondering, what if anything the colors mean.

The obvious would say purple means lightning based, but blue in Allagan/Crystal tower doesn’t necessarily mean ice or water.

And I believe the yellow in Thanalan is described as corruption.

Do we know? Or is it just aesthetic choice?