You can use whatever shaders you feel like using and use them to adjust the game to your taste
typically people would enable adjustments for contrast, brightness, saturation, bloom, sharpness, SMAA. If depth buffer is available, then also DoF, AO effects. If one is familiar with Photoshop type of color effects, I have a whole lot of those things on my github here:
github.com/prod80/prod80-ReShade-Repository