Any clue on how to get chroma effect

https://preview.redd.it/bsz932dk6tde1.png?width=1272&format=png&auto=webp&s=63f5fc9e9dc75bef16ec8a89021f2d9775a28094

I saw a guy who had a chroma effect (colors slowly changing in a cycle), any clue on how to get this? I have reshade and NVidia but no clue if that's how you do it.