Actually have to post (sorry) to correct something Rogue said, the first pic is actually my efforts to make the model look as much like the studio model (seen in ST:II thru ST:VI i.e. in 'blue' form) as possible, I've been looking extensively at the colour photos of the Enterprise-A available at
http://www.starshipmodeler.com/tech/refmain.htm - the page also has photos of the Enterprise-B/Lakota studio model which would be usefull for acurising a model of that ship or the Excelsior. Anyway, I didn't mean it to make a jab at WZ, I love his new connie, so much so I made it my new flagship (USS Sicilia - you can see part of the name and 1713 registry in the top left pic) but I wanted it to be as much like the Enterprise in the films as possible. So I did.
The second pic is indeed my attempt to make the Enterprise from ST:TMP, all the details I added or modified from the acurised ST:II Enterprise are present but in a calming engineering green
also this version uses WZ's purple warp glows that came with the model and the torpedo launchers are darkened as they were in the film. I only really did this version (not too keen on the green) as I doubt many people can comfortably run Decker's green version of Khaliban's Enterprise and this version is a good alternative.
If anyone spots anything I've done wrong in either version (either now or after I get permission from WZ and release them) then please say so, so I can change any errors or oversights.