Las Vegas Glasses

A spectator selects a card, returns it to the pack and shuffles. The performer states that he'll try to find the card without even touching the deck. He puts on his glasses and looks down at the deck held by the spectator. He names a card...but it's wrong. He tries again, but still doesn't get the right card.

Special Bonus Effect: Spectator Spectacles!
The performer, after having a card selected and returned to a red-backed pack, lets a spectator try on his "special" glasses (empty frames). He explains that these special glasses will make the back of his selected card look different from the others in the pack.

As the performer spreads the cards, one is seen to have a blue back! When this card is turned over, it's the spectator's selection! Retrieving his glasses from the spectator, stating that if he were not wearing the glasses that his card would look like the rest. When the spectator turns his selected card over again, it now has a red back!