Game Boy Player will play ALL Game Boy games, Colour, dual, mono and Advance
Super Game Boy will as mentioned play original mono games and dual colour games, but they will not display in full colour
True...
But honestly playing the original Gameboy games/dual colour games on a SNES feels ultra-retro.
There are tons of games that will play on the Super Gameboy, and distinguishing a Color game and a Dual games is really easy. If its a color game it wont have the side knick.