This is only test version. CoT are using different snow weathers records in game like Vivid Weathers.
Report me if I am missing any snow weather records in CoT. Do not use vanilla weather command console to test in CoT.

Dark.
This is only available option for NAT-Vivid Snow. If the snowy night is too dark, send me feedback.

Dark
There are 2 more brightness options available for Obsidian - Vivid snow in optional files

This is only available brightness option for Rustic Weather and Vivid Snow.

This is only available brightness option for True Storm-Vivid snow patch.

Darkest - Hardcore mode for adventure. Best experience with Wet&Cold Blizzard effects.
Only for Obsidian Weather.

Light. Your view is visible at night. Good choice for ENB users.
This option is only for Obsidian Weather.