+1 Making sure that the background in general has a dark BG is necessary for better imersion too. I don't really remember it well, but the pathway was also dark or clouded out on the maps in Warcraft 3 so you couldn't see past what isn't really visible. I don't honestly know that much about this system yet thou, so I don't know if you could remove clouds/fogs in the game with a macro key. At least something to help storytelling, and not just the eyes for playing longer sessions.