My first tutorial, so apologies for the errors
This is something that i believe would be very useful to mapmakers out there...
By using the texture "data\torley\desat/grittyblack2clear1_z" as a cloud layer and tweaking it around a lot, you can make an "atmosphere" of sorts.
And using something like let's say, "torley/desat/unchartedcontinents"" as an envlayer, you can set it as an "terrain" of the atmosphere.
To tweak the color of the atmosphere in our case, use the MAD commands before the cloudlayer path, example: "<mad:2/1/1>data\torley\desat/grittyblack2clear1_z" will give it more of an red tone.
For the terrain, /envlayer, the same applies as above.
Just download the cfg file and while on a editing match, type /exec atmosphere1.cfg for it to show up.