This is a color grading mod that modifys the lut textures using Resorep, to make the game look more brown and desatured, like Batman: Arkham VR.
I got the idea for the mod, because if you use Resorep to get new Batsuit mods or something, Enb, Reshade or SweetFx doesn't work anymore, so you have to accept the original visuals, or search for a workaround.