Occasionally diamond dust glints in pink and and cyan colors. Walt Tape, who saw the effect once in Fairbanks, called it as the psychedelic colors. Here are a couple of photos of one psychedelic case this winter. The image above is a maximum stack of 19 frames with 2.5 and 1 second exposures. Below is a single frame with 2.5 second exposure. And below that a maximum stack of 9 frames with 6 s exposures. Colors have been observed so far only in spotlight displays. How they come about, I don't know. A crystal sample could give some answers.
