Thats rights boys and girls, a GBA SP in an original Gameboy shell. I thought about doing it until I realized that I would never play it thanks to the Gameboy player...
"In addition, most Game Boy games published by Nintendo have a special palette that is enabled when no buttons are pressed. Any game that does not have a special palette will default to the dark green (Right + A) palette. Notable games that do have preset palettes are Metroid II: Return of Samus, Kirby's Dream Land 2, Super Mario Land, Tetris and the Wario Land series."
"In addition, most Game Boy games published by Nintendo have a special palette that is enabled when no buttons are pressed. Any game that does not have a special palette will default to the dark green (Right + A) palette. Notable games that do have preset palettes are Metroid II: Return of Samus, Kirby's Dream Land 2, Super Mario Land, Tetris and the Wario Land series."