Just posted this over at the nexus forums. I think I was getting messed up colours from my "No Tint and Desaturation" install. That may be why I didn't like this combination of darker nights with the tint attenuation.
Pictures with Bit of Tint, DarkerInteriors.esm, DarkerInteriorsAdd.esm, DarkerNights.esm: http://imgur.com/4ey7P | http://imgur.com/hlc22 | http://imgur.com/rTZdn
Pictures with DarkerInteriors.esm, DarkerInteriorsAdd.esm, DarkerNights.esm: http://imgur.com/ifw0l | http://imgur.com/wu7Bd | http://imgur.com/IzZiw
Vanilla comparison by day: http://imgur.com/7Pu6q
Using Bit of Tint version of NoTint.esm was adding way too much colour, making the image tones overboard with radioactive glow arround. Then when I removed it was beautiful again!
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About "True Darker Nights" mod:
The only problem I am having right now with True Darker Nights is:
- white mountains, due to extreme levels of dark tones
- and very little light from actual light sources, such as moons or sky.
Check the pictures in this album: http://imgur.com/a/Bmz4Z#0.
I didn't care to post this over the nexus page because I know Plutoman reads this thread

(edit:) Made another album for comparison with "No Tint and Desaturation" mod (just DarkerInteriors.esm, DarkerInteriorsAdd.esm, DarkerNights.esm) under the same circumstances: http://imgur.com/a/BxD43#0.
BTW, the shots were taken with vanilla game, without any kind of FXAA shader injector mods - that would defeat the purpose of comparison between these two mods.