The Changer by Mark Southworth

A box of blue bicycle cards is freely shown. With the wave of the hand the box unbelievably changes to red. Blink and you will miss it! The best bit of all is that the box can immediately be given out for examination. From here you are ready to go into your favourite card routine. 

The Changer is easy to do and one of the most visual changes you will ever witness. With absolutely certainty it will become part of your card repertoire forever.