that lakota was the same model as the enterprise b model, im pretty sure it was not changed for filming. most of the color scheme i got for the ent b was from pics of the lakota, since the model was last used with that name on it. it is the same excelsior model in st3 and 6, and 7... not many details changed except for the blue being changed to a more blue/green. distance from view also effects how it blends, what youi see in the renderings is without any special lighting applied, and therefore looks a little bright and colorful, but in the darkness and low lighting of space, or BC, the models look much better.
is the excelsior not supposed to have ramscoops then?