I do not think they make it any more, I have a motion piece for mine with a white jacket thrower and camo on the other side. If I remember right someone told them they stopped both around the same time.
It was a servo motor that plugged into the motion plug on the receiver. You pressed the button on the transmitter and it would turn around. One side white and one side camo as Jason said.
It mounted on the BB unit and would tip over in the wind. After awhile I mounted the servo in the middle if a stickman with a little modification. It works pretty good and doesn't blow over in the wind. If you use a good piece of camo (old fashioned cotton flannel) it disappears. The new camo is so shiny in the sun it looks white sometimes.
If you got a servo and played around with it you can make it yourself.