Here is that old color change silk trick many of us had years ago, but now made in pure silk and made VERY WELL from Magic by Gosh. Show red and blue 12" silks tied together, pull thru your hand, they change to green and yellow! I try to make them stand up, fail several times, then do the color change as an afterthought, act startled to make the kids laugh, then ditch the silks. It's a quick bit that works!
My special price for YOU