Ключевые слова: abstract, background, black clouds, calm, clear, cloud, cloudy, cold, dark, dark sky, dawn, daytime, emotion, evening, evening sky, gradient, gradient background, gray, heaven, heavenly, high, landscape, loneliness, mood, peaceful, peaceful background, ray, relax, sad, sad background, silent, sky, sky and clouds, sky background, sorrow, storm, storm sky, sun, sunny, sunny sky, sunrise, view, warm, white,