You should see the air inside a garment factory where fleece clothing is sewn. You can literally see colors in the air. Years ago I worked at one for a few months. It was a factory for high end catalog clothing like L.L. Bean and Lands End. I quit because even wearing a mask at work didn't help, I would go home every day coughing up colored phlem. My BFF joked that she knew what I'd been sewing every day by the color I was coughing up at night.
Cari