waves
Anyone can join, with a 50-word vignette in the comments. Your vignette does not have to include the prompt term.
My effort:
Waves of light broke over her, scarlet, poison green, clear blue. Rosa froze. More came, and though they did not even touch with a pressure as light as an alighting butterfly, or make the air even a fraction colder or warmer than before, she could not bring herself to move.