A method and apparatus for preventing leakage from a fitting coupling a first and second fluid supply line to an environment surrounding the fitting is generally provided. The lighting object includes at least two LEDs, each of which emits light of a different wavelength, and a microcontroller for independently controlling the intensity levels of the at least two LEDs to vary colors perceived by the observer during the light show. The free end of the first pattern connects a feeding point. All suitable types of aircraft are contemplated, including especially helicopters, tilt-rotors, and other rotorcraft.