The magician is seen wearing a normal vest, buttoned at
the front and worn showing out from under an open jacket. The magician
turns to his table to take a prop from the table top. Upon turning back
to the audience the vest is seen to have changed color.
This is
repeated once more later in the programme, and a third time. This not
only stands as a unique quick change effect on its own, but also may be
performed as a novel running gag which may be repeated ad infinitum
throughout a show.