Of all the mods that let you fiddle with Skyrim’s colors filters, FXAA Post Process Injector remains the best and most comprehensive, allowing you to tweak light bloom, scene sharpness or drape everything in vibrant technicolor. I mentioned it in my “10 coolest” list and it’s still my go-to for adjusting the overall “feel” of the game once I’ve applied texture mods.
Get it: FXAA Post Process Injector