When I originally started this, I grabbed the Island Settings "Desolate" render style and didn't let go. One thing I wanted though, was to be able to pop certain colors (like purple) so they really stand out. I never really took the time to figure it out until recently.
The latest version has Post FX on the central island, Kirk's Tree, the Waterfall, the Grove. They're WIP, and the central island one is the least on-target. Here's some shot though.
This is mainly just the "miasma" event Day Sequence Device. I wanted to get shots of the Post during the event, but just realized that it works great the first time you do it, but it doesn't reset properly, so you can only see it once. I'll follow up later when I re-log.
Punchy Waterfall.
Punchy Grove
Not quite amazing island fx, first that will be overhauled:
this is a still from a video I'm about to upload where you can see the transition from island to tree.