Two card monte, like most transpo effects is definitely a lot stronger when you make the cards change colors - in this case the black aces could have changed into the red queens. It's just stronger. That said, TCM is kind of difficult to demonstrate without a spectator, and I think you did a good job presenting the effect although the fact that you kept bringing the card up to the deck (to do your triple lift and top change) was really obvious and suspicious looking. A layman might not notice, but it definitely stood out to me.