Stay Cool is a very visual trick that allows you to make a pair of sunglasses appear on your face then you wipe them and they change colour! A clever gimmick that is easy to perform but gets big reactions, check out the video below. A great opener that will break any tension and is just fun to perform. You can have the sunglasses appear in green, change to yellow at the wave of a hand and at another wave they change to black. Hand them out for inspection or just shout Wooo Stay Cool and walk off! A few different variations are taught in an hour long explanation by Tobias Dostal.