Here a question for all you knowledgable card magicians out there. I have devised a routine and would like to know if anything exists in the same manner.
The effect:
As the spectator sees it:
I spread through the a blue deck (of course I wouldn't draw attention to it in my patter) of cards face up and up jog the 4 kings, the 4 jacks, or whatever suits the patter I'm using. Remove them and count the four cards - flashing the backs as I go. Put them to one side. Have the spectator select a card and place it back wherever they like. Whilst they're looking at their card I mention I'm going to remove something from my pocket, which is a red joker, and place it on the table mentioning we'll need it later. The deck is turned face up and the four cards (jacks/kings/whatever) are counted onto the face up. I turn the deck over 360 degrees in my hand and the four cards disappear (or depending on my confidence with the sleight involved I might do it blatantly by cutting the deck). Then I ribbon spread the cards face down to show five cards in the middle of the deck are RED. You let the spectator take them out and they are the four cards with the selection in the middle (now red, not blue).
Although the effect is not "completely clean" at the end of it the deck can genuinely be shown with no duplicates of the four cards used.
I've been working on this for some time and have hit brick walls with several ideas, including using four matching cards from a red deck and switching them somehow, and several other ideas, which escape me because they held no value after thinking them through. Until today I haven't been able to find anything as "clean" and "direct" as this (inspiration for which decided to hit me whilst I was in the shower whilst having to get to work in 30 minutes, inconvenient or what? Managed to jot the ideas down though).
As far as I know this is an original routine, or at the very least an original handling. I would post a video but although I have the theoretical workings down, my ability to perform it is lacking severely. For the amount of time I've been doing magic, an amateur like me could consider this a bit of a knuckle buster as it uses some sleights I've only learned recently and haven't perfected yet?
Does any one know of a routine that has the same effect as this? Does anyone think (without seeing it performed) that this could be a good trick? Any suggestions for the patter for why they change colour? At the moment I'm working on a "Red & Blue tribes" idea and converting the members of the tribe (hence the use of a joker) but I think it's pretty weak. Any help on this would be greatly appreciated.