Call to the Colors
Call to the Colors is a classic plot in card magic in which the magician is able to deal any color he chooses.
In "Card Magic for Amateurs and Professionals", Bill Simon says he based his routine on a principle by John Scarne used in "Scarne Card Puzzle". He also mentions that Cardini previously introduced a similar effect.
- Card Magic for Amateurs and Professionals by Bill Simon (1952)