SGB2 Border Injector

SGB2 Border Injector is an easy to use tool that can replace up to 7 borders in the Super Game Boy 2 software with custom images. The Super Game Boy will automatically switch to the custom border that was injected last. The patched ROM files can be further customized with the SGB Settings Editor and are compatible with the SGB mode of the SD2SNES / FXPAK Pro.

http://www.romhacking.net/utilities/1653/

example:

Super Game Boy 2: Vaporwave Edition
http://www.romhacking.net/hacks/6449/

Super Game Boy 2: Game Boy Color Edition
https://mega.nz/folder/QFdFTabD#7hoin02Vg7qCqtDxLQl7ig



renamed rom.sfc to sgb2_snes.bin for sd2snes and pro

Nice, I saw that listed but was not sure if it worked like what it was supposed to or not. Does it work for emulation too?

Hey, yes, it works in emulators that fully emulate the SNES part of the Super Game Boy. BSNES for example.