Although I have not built this set I will supply the color coding of each jersey worn by the various flight deck crewmen. I served for 2 years on the USS John F. Kennedy CV-67 and became very familiar with flight deck personnel the meaning of each color jersey.
First and foremost not all of the figures should have khaki pants, only Chief Petty Officers (E-7 - E-9) and Commissioned Officers( O-1- O10 ) should all of the lower enlisted ranks (E-1 - E-6) should have blue or possibly camouflage pants.
The jersey colors are; Red- Ordnance handlers, White- Safety/Medical, Blue- aircraft handlers, Yellow- aircraft directors, Green- technical, mechanical, Purple- aircraft re-fuel crew. Brown -- aircraft Plane captains (term only, these are junior enlisted E-3s that ride inside the aircraft while it's being moved around the flight deck as it is a regulation to have a person at the controls, brakes, etc. Typically, the average working hours for members of this crew are 14, if not 18. And for extra realism lots of dirt and grime is ground into the uniforms.