Select color scheme: Press A(2), B(2), Right, Left,
Select at the title screen. The word "BOY" will
appear at the top left of the screen to confirm correct code entry.
Select it to cycle through the various color schemes.
Hidden song: Start the game. Press A, select Japan, then
press Select(2) to return to the music board. Then, hold
A and press Up multiple times to hear the hidden
song.