I hate to revive a long dead thread, but after a quick readthrough, it doesn't appear that anybody considered overlaying the EE DVD on top of the EE BD and setting the blending mode to "color" in a program like After Effects, thus applying the DVD's color to the luminance of the BD.
The technique is used here at around 1:20 : https://www.youtube.com/watch?v=agMUHc2ODqI
Did anybody attempt this? Did I miss something re-reading this thread?