Certurix
I'm suggesting 2 ways of doing it:
  • Adding a new method :SetFogColor to set the color of the fog by passing a Color type value as 1st parameter.
  • Edit :SetFog method to add a second parameter to set the color of the fog (still Color type) but optional.
In my opinion, first one is better because you actually know what the method is doing, and it match with another method named SetVolumetricCloudColor.