Loki, the volcanic planets of mine are not rendered as volcanic planets (renderAsVolcanic FALSE), you should check that out, that might be the problem? Also could be a colored skybox thing, try to toggle it off and on.
Goa, yeah I've finally done all the icons, next up is the planet bonuses, and some minor adjustments to the entity files (pop-caps, resources, ...) and planet spawning
I'll upload the most up to date version tomorrow for testing, sometimes I've been getting a minidump while loading a random huge map and I'm not sure what's causing it
edit: uploaded it already, went faster than I thought
DOWNLOAD LINK (160mb .zip)