u/Halo-One

I can't seem to figure out how to make original GameBoy games look like the original green/gray screen. I have a Miyoo Mini+ running OnionOS. My GB games seem to have some color added to them.

Any tips on how to do that?

I tried playing Paper Mario on my RG40XXH and when the stars are talking the text is not there. Anyone know how I can fix this?