To enable the guitar modes, enter the following commands at the Mode Select screen.
Note: R - Red, G - Green, B - Blue, P - Pick

Fast Flow: R, G, B, P, P
Super Fast Flow: R, G, B, P, P, R, G, B, P, P
Hidden: R, B, G, B, R, G
Blank Screen: R, B, G, B, R, G, R, B, G, B, R, G
Random: B, G, G, R, G, P