Hello, @Corosauce!
I enjoy your mod very much, but there is a thing that quite spoils the realistic experience. The problem is that even with the thick cloudy weather, the star shine is enough visible at night, especially on the horizon, where no clouds are being rendered at all.

Stars behind a storm:

Therefore, my suggestion is that when the sky is being dominated by a major thick cloud mass or a storm, stars should be rendered far paler.

Also, it would be nice, if with the thick cloudy weather in the daytime the sky turned more grayish, and lighting darker.

And, it would be even more realistic, if the overcast descended as it had been approaching the horizon.