A blue backed deck of cards is shown back and front. A spectator names ANY card and this card is placed to one side. Now the action starts, the deck seems to have a mind of its own as all the cards mix themselves face up and face down. Next the whole deck decides to change to RED backs, every card now has a RED back. If you think this sounds good, wait for the kicker ending.
When you turn over their thought-of card it has a GREEN back!
Easy to do, no rough and smooth, no deck switches and no forcing.