Force GBC/SGB mode in GB games?

[Dante164]

Hello there.

I've been playing a lot of GB lately, and I notice that non GBC games usually boot in black and white.
I was wondering if there is a way to make GB which have special palettes when played in GBC to be loaded up with mGBA.
Same thing goes for games with special palettes when booted through SGB, like Metroid II.

I believe this is related to the Gameboy Color BIOS having some palettes stored in its data usually linked to the ROM's specific header, though I'm not sure if this is actually the case.

A more in-depth information about the Gameboy games being colorized in GBC mode is found here:
https://tcrf.net/Notes:Game_Boy_Color_Bootstrap_ROM

So with that said, the question is, can we boot games like Kirby's Dream Land in color in any way with the current mGBA builds? Or is this still in planning / not implemented into it yet?

Hello ShadowOne333 I have the same problem as you with the same video game. I followed your steps download the BIOS called gbc_bios.bin. Weighs 2.25kb. After activating the BIOS you can see the correct colors in the video game of Kirby. The only problem is that the kirby sprite looks red and white when it should look pink. Any advice to solve this problem? by the way, sorry for my bad english thanks in advance (Y)