Ключевые слова: alternative, background, black, bright, bulb, concept, conservation, creative, creativity, dark, design, diode, eco, ecology, economical, economy, efficiency, electric, electrical, electricity, energy, environment, environmental, equipment, fluorescent, gold, graphic, icon, idea, illuminated, illumination, illustration, innovation, inspiration, invention, isolated, lamp, led, light, lightbulb, luminosity, modern, object, power, save, saving, sign, symbol, technology,