angles anticorrosive appearance bolt bolts circular exterior external galvanised metallic paint post power-post protective round silver silver-frost silver-frosting spray-paint texture textured textures abstract body body in darkness dark darkness head in darkness light light and shadow light source man man in dark one man only man only one man pattern shadow striped pattern appearances architectural architecture buildings city contrast designed detailed distinctive elements heritage historic historical lamps lights office offices ornamental patterns perspectives prestige prestigious quality sepia solid structures style wall wall-lights base bulb cap cost current double-contact-bayonet-base edison-screw-base electric-current electricity embedded-wires emissions filament gas-discharge globe glow glowing incandescence incandescent-light instant-start lamp light-source lighting luminosity luminous luminous-efficacy sleeve standard stem traditional ultraviolet ultraviolet-emissions ultraviolet-light ultraviolet-radiation