“I never understood why it was green”
I think these series are a little before my time, however…
A while back Mark Kermode had ?the son? of the guy responsible for that series on the film show, because Mark was a massive fan of the series in question, he asked the above question as well (I think he repainted his one the correct colours). The answer was that with that and other models from the series, the marketing team belonging to the toy company were convinced that the correct colours were not appealing, that no one would buy the toy. Green, however, was a guaranteed seller… Hence they ended up green 🙂
PS i had to post in this thread as i dreamed i accidentally broke a priceless model with little trusses and was desperately trying to fix it :/