Yep as soon as I apply the scanlines the screen darkens, so I know I did that right.
But like said earlier I’m still having the problem of redoing everything after I change games or exit out of the emulator.
You know, the easiest way to so this might be to select “configuration per core ON” and “configuration save on Exit ON”. Both are in general settings.
Although I have not personally tested this.
You can also rename the core-specific config in the opt/retropie/configs/emulatorfolder to “retroarch.cfg”. If you do this, be sure to name the existing .cfg in that same folder to “retroarch.cfg.bk” or something, so you can revert to it if something goes wrong.
That, or wait for Floob’s video that makes this easy to understand :)