what was the origin of the all yellow colour scheme
In view of the ridiculous and laughable "power" margins of this toy I think it might simply be down to it being a lighter colour...
And continuing on that thought one has to wonder why it was felt necessary to squander payload by having a "navigator" on board. You'd think it would be obvious, even to their airships in their monumental wisdom that the answer would be to teach the damn pilot to navigate especially in an aircraft that could barely cope even with lifting a map. Adding a gash 200lb body to achieve that (weightless) feat is a blinding bit of Whitehall brilliance is it not?