I don't know how useful / reliable this is but I had a thought, As all you (zombie84) have for reference are photos of the technicolor print screenings, which are not ideal. Could you not use the OUT trailers on the 2004 bonus disc instead?

The reason I suggest this is I was watching a few of the trailers today and noticed how much their colours resembled what you seem to be aiming for. I was thinking these might be a better source of reference, but I am no expert so I could well be wrong.

Dark Jedi those caps from the V3 look fab! :D