It changes the colors and lighting of the entire game to more realistic colors and adds rain to Fallout 3 Perfectly compatible and works great with these mods: Fallout Street Lights Enhanced Weather - Rain and Snow Version 1.2 Changes: More realistic sunlight. Should work well with mods that use scripted weather override.
Weather types have also been changed to no longer be location specific. It's the same Fallout people have come to love, but enhanced with weather and lighting designed to mimic those of real life, instead of the surface of Venus as the original game seemed to. Home Fallout 3 realistic interior lighting Fallout 3 Realistic Wasteland Lighting at Fallout3 Nexus
