Hmm...I remember seeing something about that, many moons ago. Let me look in the magic bag...<rumble>...<shuffle>...<dig>...OUCH! Where's that flashlight? <bumble>...<stumble>...OOF! <grumble>...Wait! Here it is!
http://www.subsim.com/radioroom/show...ght=dark+night
Here is the 'Ocean Madness' mod Marhkimov refers to in his first post.
http://www.subsim.com/radioroom/down...o=file&id=4366
And the thread explaining it.
http://www.subsim.com/radioroom/showthread.php?t=87287
I found some other old threads on the subject, but the general conclusion in all of them was "adjust the gamma settings on your monitor" or "use this mod", and Marhkimov's seems to be the best of them.