It works alongside the Enhanced Weather mod, giving areas heavy thunderstorms (with radioactive rain) and snow. However, removing the green tint makes the nights super dark, so you'll need to make full use of that PIP-boy flashlight.
It might seem like a minor change, but the impact is nothing short of startling. Additionally, it removes the green fog, neutralizes the indoor lighting, and changes out the water in most places. Fellout removes the green tint from Fallout 3, revealing clear blue skies and spectacular sunsets. Sometimes, it's the simplest changes that have the biggest impact.