So im trying this method
but when i put it as material under misc, the whole scene just has a weird color, but i can see the outliner on everything, even tough i only put render on a few of them.
Still havent figured!
Halp!!!
You probably made a mistake while setting it up.
There’s no info here to help you debugging though but it seems like it’s exactly the same effect as the one created here:
So try downloading that effect which might fix your issue.
Otherwise you should really try to pinpoint where your issue is and provide a bit more context. Did you accidentally with some code highlight everything? Is your material buggy and you accidentally inverted the selection? Use the wrong buffer?
Otherwise you can only be helped by pure luck if someone did exactly the same tutorial and ended up exactly with the same result and figured out what it was.