B,Y,O,R,Y,O,B,Y,B,Y,B,Y,B,Y,
Blue, yellow, orange, red, yellow, orange, Blue, yellow, Blue, yellow, Blue, yellow, blue, yellow
I think this is the code. I know it unlocks everything, from songs, to characters, outfits, and guitars. I'm not sure if it is the correct sequence but I do know it is like this...you may need to add an extra B, Y at the end or take one off....just tinker with it....
Hope this helps.