Color Transpose by Nico Guaman

Color Transpose by Nico Guaman
A freely chosen card changes places with its equal in another deck of another color
Two decks of different color are shown. the spectator chooses one to start with. the other is left aside.
the spectator SAYS a card with total freedom. In the cleanest and simplest way, the card that the spectator chooses changes places with its equal in the other deck.

No forcing
Normal decks
Easy to do