A
very visual effect for close up or small stage presentations.
2 keys and 2 locks are brought out. One set is blue and one
set is red. The blue key will
open the blue lock but not the red lock. The red key will
open the red lock but not
the blue lock. You then show that the locks have a different
color on the opposite side. The blue turns around and
becomes red. The red turns around and becomes blue.
Yet
still, the blue key opens the blue lock and the red key opens the
red lock. All this can even happen in the hands of you
spectators.
