How can i change that to prime?

Just wanted to look at south park on my laptop, hit play and the video looked as if we had put a green filter over it

unfortunately can't insert a picture, but it looks like this for all series for which I have looked to check

this "filter" lies above the series for both the app and the browser

can someone explain to me how to get back to normal color?

It's called a bug and not a filter

And how does it go?

I never had a clue. Maybe a restart will help or your media player won't work