Colors of MacTaggart Scott catapult on HMS Sheffield 1941

[Cameron Lynch]

I know this is a pretty esoteric question.  I'm building a Walrus from 700 Squadron RN sitting on HMS Sheffield's  MacTaggart Scott catapult in early 1941.  I'm trying to identify the appropriate colors (colours) for the structure of the catapult.  The carriage that the aircraft is mounted to appears to be black or dark grey.  I'm unsure on the color of the structure of the catapult itself.

 

I'd be very appreciative to hear your thoughts and ideas.

 

Cameron

[Chewbacca]

There's a really interesting Royal Navy Instructional Film on YouTube which details how catapults worked and there's a fair bit of footage filmed on Town Class cruiser (okay I'm a spotter so I found it interesting!).  Unfortunately it's in monochrome so difficult to be certain about the colour but the majority of it looks to be the same dark grey as the "Catapult Aircraft Superstructure" (apparently the correct name for the launch carriage).

 

Hope this helps