Highlight a saved data file, then hold A + B + Select to display an option to delete that file.
Super Game Boy Colors
Note: This code requires that this game is used with a Super Game Boy cartridge in a Super NES console. Enter one of the following codes during game play to change the background to match the corresponding Game Boy case colors.
Hold Start for Green
Hold Right + Start for Red
Hold Up + Start for Black
Hold Down + Start for White
Hold Left + Start for Yellow
To change to the transparent Game Boy, sweep the D-pad continually in a Full-Circle until a tone is heard. Hold the D-pad in that direction and press Start.