Is your feature request related to a problem? Please describe.
From user Cavasana's comment on Nexus site:

I see that a few months back there was talk about finding a way to remove the rain layer in screenshots, and I have a similar inquiry. I use Dynamic Nighttime, which applies an overlay that darkens the screen and gradually gets lighter as the morning goes on. Your mod captures that overlay as well, but curiously, it does not capture the fog overlay from Climates of Ferngill. I'm not sure how much can be done about this, since it's not part of vanilla, but if there's some kind of workaround beyond just color-correcting every screenshot myself, I'd love to hear it!