This is so cool! Paula, I’m going to email what we just talked about since Nicky is on this thread. :-) It would be super cool if there were a 2nd CA layer that the captured image got dumped into (and it could be hidden and shown), and then you simply wrote CA rules that responded to this 2nd layer. This would open up all kinds of creative possibilities. > On Mar 10, 2016, at 5:45 PM, Paula <****************> wrote: > > it is tracking the cyan color of the pen! > <poopCameraTracker.gif><fireCameraTracker.gif>