Four-color deck

In a typical English four-color deck, hearts are red and spades are black as usual, but clubs are green and diamonds are blue.

[2] In 1922, August Petryl & Son produced a tarock deck with black clubs, yellow diamonds, pink hearts, and green spades in the United States.

Also in 1936, the Universal Playing Card Co. of Leeds, in its Crown Point Works, produced a similar deck in which it was the hearts and clubs that exhibited shaded out centers, with the symbols merely outlined.

More recently, in 1973, Öbergs of Sweden produced a deck in which the entire backgrounds of the diamond and club suit cards were flesh colored.

[citation needed][clarification needed] In 1933, Grimaud of France, in its Olympic Piquet deck (32 cards, 7 low) produced a deck in which the indexes were enclosed in oblong boxes appearing in reverse shading, with white designations on a black or red background, on the spades and diamonds.

The Turbo deck currently on sale carries this idea a step further by modifying the entire face of the card in this manner, on the clubs and diamonds.

A four-color deck for poker using the black spades, red hearts, green clubs, and blue diamonds was developed and publicized by Mike Caro.

[1] The World Poker Tour uses the same colors as Caro's deck to display the players' cards for increased visibility on small television screens.