The Quirkology Colour Changing Card Trick has now had almost 3 million views on You Tube. However, it was tricky to film and everything did not always go to plan…
If you have yet to see the original clip….here it is…
Filming the clip was far from easy because it was created in a single take, and thus all of the changes had to be made at exactly the right time and just out of frame. I thought that you might be amused by a handful of the many many outtakes….
Richard Wiseman 
You tricked me, you rotters!