Reflective Scenery is an Android Wear watchface (and widget) that reacts to the real world. In the background, the sun arcs through the sky. As it sets, the sky changes colors before transitioning to night. Comes with 4 analog faces (and 1 digital face).

If you buy pro ($0.99), you can choose your setting -- snow capped mountains or a city of sky scrappers. It also enables astronomy and weather data -- rain, snow, and clouds will appear on the watch, and the real sunrise and sunset will be used.