Best used when paired with No More Dark Biomes mod.
Official description below.
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As requested, I have also made another mod which makes Permafrost not so bright.
It is compatible with No More Dark Biomes. Install both of them to have balanced lighting for different biomes.
Want to DIY?
1) First, you will need to extract the Trove files. If you want to save space, just extract prefabs/zonelighting
(See: http://forums.trovegame.com/showthread.php?25707-Guide-Comprehensive-Trove-Modding-Tutorial)
2) In prefabs/zonelighting, there are some .binfab files. Their names are self-descriptive. They hold the lighting data for different biomes (zones). e.g. dragon.binfab = Dragonfire Peaks, neon.binfab = Neon City.
3) You may probably want to copy the .binfab files to the override folder first, so the original set of files are untouched and future adjustment can be made easily.
4) Pick a lighting and replace the unwanted one by renaming the .binfab file. In my mod, I replaced dragon.binfab with desert.binfab, and neon.binfab with peaceful.binfab.
5) Launch Trove and see the result.
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Copy-pasted from: http://forums.trovegame.com/showthread.php?94521-Utility-No-More-Dark-Biomes