Hello Everybody,
I managed to get the populair graphics overhaul program ENBseries bij Boris Vorontsov to work in NTW. Sadly only the color correction feature works. But it can still greatly improve the atmosphere in the game.
You can make your own palettes by using the 3dsmax scene Boris made and is included on the bottom of this post. Notice that the palette images must be a .bmp file with 24 bit depth.
ENBseries
Downloads
Place the files in the same folder as napoleon.exe is. Once ingame press SHIFT+F12 to activate color correction.
Again, all credits go to the creater of this program
ENBdev.com