I don't really agree that it matches the environmental effects.
It matches the KT druid form eyes, but the KT druid forms also have noticeably more green effects than actual drust magic does (I assume specifically to make it readily clear that they aren't just using the exact same dark magic). They also specifically have a much more naturalized organically grown wicker look isntead of the bundled together artificial wicker look.
I just don't see this thing being at all drust related. Especially since nothing else about it is drust-like.