In 1984, Douglas Leigh designed and installed an automated fluorescent color-changing lighting system in the old [G 06 / dirigible] mooring mast. This system consists of 880 vertical 75-watt fluorescent tubes and 220 horizontal fluorescents at the base of the mast which can be changed at the flick of a switch. Each face of the mast has four vertical banks of 11 eight-foot panels positioned one on top of another. Each of these 176 panels contains five tubes - one each of red, green, blue, yellow and white. Additionally, at the base of the mast, there are 44 newly installed panels of horizontal fluorescents, also containing five colored tubes each, totalling 220 tubes. A new ring of 32 high-pressure sodium vapor lights, 70 watts each, above the 103rd floor, was installed to create a golden "halo" effect around the top of the mast from dusk to dawn.
