I have found this L.E.D to use for orientation it uses an inverter to create a really bright light it is made in Red and Blue http://www.ebay.com.au/itm/1W-LED-Super-Bright-Cool-Blue-Light-LED-Multi-rotor-quadcopter-orientation-/180988507620?pt=US_Radio_Control_Control_Line&hash=item2a23c175e4