Thanks :)
That particular smoke mod seems to be a simple texture/gradient replacement, with some file that I do not recognise and that makes little sense in Notepad++. I'll be replacing textures for sure, but I also want to get into the mechanics of the particles' behavior, how long they last, how solid thay are, how dense they are, which texture they use, how they move etc, and how all these can be affected across their lifetime. (If they can be.)
Looking at the Black Shark Bazar/effects folder, there are a lot of shader text files in there, so I'll need to know more about them, their properties & what they mean, and syntax etc.