Hi Cedric - not to worry, my post was not aimed specifically at you; you're not the only one chiming in with common misconceptions about the colour changing deck! This really does seem to be one of those tricks where magicians can't help thinking like magicians.
In our efforts to be "original" it is often tempting to think in terms of methodology, and it is indeed sometimes possible to improve methods but if you're going to take the creative process seriously then you need to investigate the notable handlings already in existance. There are numerous CCD routines out there which use additional cards, gaffs, clever displays and steals to "prove" that the deck is a different color - check out Card College vol 5, John Guastaferro's Brainstorm vol 2, Dingle's Deceptions, Marlo...etc.etc.
This is therefore clearly not the direction to go in if you wish your routine to "stand apart from what's been done".
Why can't we direct the creative process more towards premise...presentation...the motivation behind the actions? CCD, as with many plots in card magic, rarely has any kind of presentation or meaning attached to it. Applying some effort in that direction will end up shaping the trick itself and then you might just end up with something which is not only original, but interesting to other magicians (not to mention your audiences!) as well. If you don't care about magic which is interesting to other magicians, then learn one of the truely excellent CCD routines already out there - because magicians are the only ones who care about originality.
David Williamson's "Funner Colour Stunner" ticks all the boxes as far as I'm concerned; only one additional card is used, the "convincers" are wrapped up in a great triumph sequence and the presentational angle on the colour change is both meaningful and powerful.
Cheers,
David.