By default, The Batarang Controller's LEDs are off.
To turn the Batarang Controller LEDs on, press the LED select button (See Fig. 1 here). The A, B, X, and Y buttons will light up and stay illuminated, then display the first of 7 colors.
To choose a different color, press the LED select button until the desired color is selected.
To “POWER OFF” the Batarang Controller LEDs, simply cycle through the colors using the LED select button until the LED’s are no longer illuminated.