Colour Key by Mark Leveridge. Effect: Four colored keys, four blank white cards, and three small envelopes are laid out on the table. One card is laid aside on the right and the other three are laid out in a column on the left. Spectator chooses one of the colored keys and places it on the card on the right. The other three cards are placed in the small envelopes and mixed up until no one knows which is which. Envelopes are placed next to the column of cards on the left and each card is used to gently tap each envelope next to it. When the cards are turned over, they are now printed with a colored padlock that matches the color key when the envelopes are opened. The card to the right is tipped and it has a picture of a front door in the same color as the randomly chosen key. Includes four keys (silver, blue, red, and green), four cards, three envelopes, and a plastic wallet. Condition very fine.