CRB (Color Changing Rubber Band) by Menzi magic and Zhao Xinyi

This is a CGI effect that you can do in reality by only using ONE rubber band.

The performer has a red rubber band in his hand. The color of the band will change slowly after the finger crosses the band.
✔ Only use ONE rubber band to complete the color change
✔ No angle limitation
✔ Reset immediately
✔ No thread or other device
✔ Multiple routines
What do you get?
✔ Two gimmicked rubber bands
✔ Five normal red rubber band
✔ Five normal yellow rubber band

Difficulty: No skill required
Online instructions with english subtitles