Ключевые слова: alternative, art, black, button, celsius, clean, cold, coldly, color, colorful, contour, electric, electricity, energy, environment, fahrenheit, flat, generator, green, heat, hot, icon, illustration, industry, isolated, line, linear, lineart, low, measurement, meteorology, natural, nature, neon, object, outline, power, renewable, set, snow, sun, symbol, technology, temperature, turbine, weather, windmill,