Yesterday, someone on TPP left a comment on Droxy's Folly, specifically regarding one of the chapters toward the end where Severus makes a crucial discovery. She said the imagery in that particular scene reminded her of a video that's been going around, of this red fabric that appears to dance in the breeze.

Here's the video she mentioned, and I agree, it's hypnotically beautiful, just like teddyradiator's description in the story. Enjoy.