The Court multi-shade colours were more than just the aircraft livery, they were used consistently across documentation, vehicles, flight attendants uniforms (I believe they were issued with one of each colour), etc. This was in a grey world when most photographs, and indeed televisions, were still monochrome, and many airlines just had plain blue cheat lines, and cabin uniforms like they were WAFs..
Stewardess of court line in summer uniform - License, download or print for £6.20 | Photos | Picfair