I'm going to assume you're using lr-gambatte as your GB emulator.
Start a GB game.
Open the RGUI by using the hotkey combo you have setup (by default: Select + X)
Scroll down to Options and press A.
Scroll down to GB Colorization
Press left or right to cycle through the options from Custom to OFF.
Press B to exit to the Quick Menu.
Scroll to the top to Resume.
Press A on Resume to resume the game.
The green overlay is now gone. Feel free to try out the different colour modes and see how they look.
@Clyde That would be awesome. I've written a script that will take a folder of videos and, using FFmpeg, overlay images on top of them like scan lines and a bezel and spit out a new video. It would be so nice to be able to do this as an image instead like retroarch does.
I don't use bezel project but in my case they were configured to the same emulator, genesis-gx to run master system, genesis and sega cd. I configured it to genesis since there is over 600 games and manually set the other two's each game through retroarch's overlay. Then saved each game's override.
The long awaited new overlays are here ! Awaited ? I think not by many people. But for who like them, here they are. Last time I have talked about "Adventure" games. The word was not very accurate. I think "Fantasy" is better. So, let's go for a little bit of fantasy :
Dragon Breed (Irem):
I don't know if I will choose a theme for next time. But I will try to post it soon. So stay tuned, and keep yourself safe.