Snow Valley-Sky

Hey, does someone know where I can find the files for the sky of snow-valley? I want to make a snow-valley-mod "dark night", I already made the snow darker, but i cant find the sky-textures...

Pls answer, and dont say "ya, easy, its in textures.rez or texfx.rez"...

yours

hmm no idea

ya, easy, its in textures.rez or texfx.rez