This is a neat little option I don't think anyone has ever really messed with before. Go to the Sky settings and scroll down to fogVolume1. Change the three numbers to something like 170 0 90. On Elegiac this is what it produced: Toy around with the numbers to your liking. Depending on the overall height of the map you'll have to experiment a bit. To change the color simply change the normal fog color option (they're tied together). As far as I can tell the other fogVolumes don't do anything.