How to do a "negative" post process volume?

Hello. I want to add some weird effects to my level, like solarization and negative colors. (that is, turning red to cya, stuff like that).

I’ve been toying around with the Post Process Volume option, but I haven’t been able to find what I’m looking for. Can anyone please point me in the right direction? Thanks.

Check out those color lookup tables here: Color Lookup Table Collection - Community & Industry Discussion - Unreal Engine Forums

Fantastic work, Jacky! Thanks for linking me your work, is exactly what I was looking for!