I know what you mean, it took me a while to get used to the Mojave.
If you follow the configurations shown in this image you should get pretty close to FO3's color scheme: http://static.newvegasnexus.com/downloads/images/40179-2-1297129045.jpg
Here's the links to all of the mods you'll need;
-http://www.newvegasnexus.com/downloads/file.php?id=34868 (Make sure to download "FNV Enhanced Shaders Lite")
-http://newvegasnexus.com/downloads/file.php?id=39619
-http://www.newvegasnexus.com/downloads/file.php?id=39947
-http://www.newvegasnexus.com/downloads/file.php?id=35998 (Make sure to download "NSkies URWLified")
Once you get all of those loaded, configure CINEMATECH and IMAGINATOR in-game as shown in the VIsual Concoction Cookbook image I linked, and you should be all set.