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.
What do you get?
ASH by Pen & MS Magic
Coin Paddle Magic (DVD + Gimmick) by Magic Club
Manila (DVD & Gimmicks) by Undermagic
Manoj Candle with DVD by Manoj Kaushal
CTW (DVD + Gimmick) by David Forrest
Flosso by Chuck Crespo and Magic Smith
Bicycle Special Numbers Red Playing Cards (plus 11 Online Effects)
ShadeShift (Gimmick and DVD) by SansMinds