I think I can help
There were two aircraft build based on Aerospatiale Gazelles. The fuselage was modified using aluminum and spray foam with a glaze overspray. One aircraft was fliable the other was not. The forward cockpit was an extension of the aitframe and did not have any working flight controls. All live controls were in the back (Original cockpit).
The aircraft were modified and operated by a company in Long Beach California called Associated Helicopter. The company is now out of business and in fact one of the pilots who flew shots in BT died while flying making the movie Delta Force 2.
One of the ships went to Universal Studios in Los Angeles California the other I don't know it's fate.
Having been in and around the BT ships I can tell you that the color was a special mix if Dupont Imron paint. It was a dark blue semi gloss pretty close to Model Masters Non-Spec blue just a semigloss. The interior plastic and fabric was close to a light Aircraft Gray with black exposed metal frames. Seats and consoles were semi gloss and flat black.
Hope that helps.
Beating the Air into Submission