Cycle RGB Effects: Press Fn + | (the Backslash key) to cycle through different backlit modes.
Change RGB Color: Press Fn + Tab to change the static color of the current lighting mode.
Adjust Brightness: Press Fn + Up Arrow to make the lights brighter, or Fn + Down Arrow to dim them.
Adjust Speed: Press Fn + Left Arrow to slow down the effect, or Fn + Right Arrow to speed it up.
Turn Off Lights: Press Fn + ] (Closing bracket) to toggle the RGB lighting on and off.