heads up however if you ever want to play Pokemon Yellow.
despite its cover art, Pokemon Yellow is in fact a GameBoy Color game. but it also has Super GameBoy support. the Super GameBoy version has worse colors however, since the SGB is more limited when it comes to color palettes.
so definitely play it in GameBoy Color mode.
the story behind why Yellow has a normal GameBoy cover, while being a GBC game is down to its development.
because the game was in fact a non-Color game in Japan, as the color support was added super late in development and wasn't ready for the japanese launch.
the whole western promo stuff and PR plans were made with it being a non-Color game in mind. this extended to the game boxes as well, as they already printed the boxes with the normal GB spine art.