Select "Input Cheats" under the options menu. G = Green R = Red Y = Yellow B = Blue.

Password	Effect
B,Y,B,R,R,Y,G,Y	Air Instruments
R,G,B,G,B,G,R,G	All HO/POs
Y,G,Y,Y,Y,R,B,R	Always Slide
Y,G,Y,B,B,R,B,R	Auto Kick
B,B,R,Y,R,Y,B,B	Electrika Steel Unlocked
Y,Y,G,G,R,R,B,B	Focus Mode
G,R,G,R,Y,B,G,R	HUD Free Mode
G,R,Y,G,Y,B,Y,G	Invisible Characters
B,Y,G,Y,R,G,R,Y	Most Characters Unlocked
Y,Y,B,G,B,R,R,R	Performance Mode