All four walls were plastered white, with dark beams exposed.

A ceiling slanted high overhead, with dark beams rising into the shadows.

The inside was dim with dark low beams and gloomy hallways.

Probably a photoelectric cell, with a dark beam, invisible to the eye.

It took the dark red beam only a moment to slice through.

A dark blue beam caught him in the shoulder and spun him around.

The interior has a dark wood ceiling with dark beams.

Remember that Kansas sunset where the whole sky was split down the middle by one dark blue beam?

A cold stone-tile floor appeared under their feet, and walls of thick, dark wooden beams surrounded them.

Abruptly, he too was driven out of his seat by a dark blue beam.