The sky of the reverse sunset or sunrise approximates the midday sky, but with less veils of atmosphere. The predominant light from the setting sun often gives the blue (cerulean) a slightly warmer yellowish feel on the horizon. The red-yellow light rays come from behind the viewer and strike clouds and solid objects bathing them in a warm orange glow that contrasts nicely against the cooler blue. The effect can be strikingly subtle.
In this example the polished floor reflects the blue of the distant sky as well as the highlights and darks of the foreground figures (thus establishing the polish). The sun also casts more shadows forward (the girls dress) that overlays the polish. This scene is completely imaginary but is nonetheless constructed using logic and first principles. It was made without stepping outside my imagination.
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