I see what you're getting at. I still feel that, strictly from an academic point of view, its going to be difficult to change what the spectator experiences when they look at a colour change; they are techniques designed, at their heart, to LOOK like one card changing into another. If you want to show the card rising then there's a number of "raise rise" style techniques out there that do the job a lot better, because THAT was their primary function.
And, which was really the main thrust of my argument before, why not save the colour changes for a routine in which they fit naturally? In this, I think my favourite magic-related quote is most appropriate: "Just because you CAN, doesn't mean that you SHOULD"
Cheers,
David.