I'll let the others do the RLM/RAL etc. but this set:
◾431AP Modern USAF/U.S. Navy Aircraft
Does not represent quality work.
Italeri:
Flat Dark Ghost Grey = 35237.
Reality:
Flat Dark Ghost Grey = 36320 (35237 is Medium Blue Grey)
Italeri:
Flat Light Ghost Grey = 36300.
Reality:
Flat Light Ghost Grey = 36375 (363007 is list as 'Light' Grey but is a closer match to BSC381 Camouflage Grey which is an RAF/RN blue-grey color)
Italeri:
Flat Light Gull Grey = 36622.
Reality:
Flat Light Gull Grey = 36440. (36622 is Camouflage Grey)
Now let's do a Sanity Check:
36622 is only really useful on for the SEA and SWA schemes from the 1970s with the Vietnam period F-4E and Iranian F-5E coming to mind as typical examples.
Light Ghost/Dark Ghost are applicable to a range of platforms from early F-15s (ghost) and F-4/F-16s (Hill Grey 1 underside) to USN F-14/18 but in the latter is typically only used in combination with 35237 as a tricolor and in the former is a largely a dated combination from the early 1980s.
Gunship Grey (accurately labeled FS36118) is the base shade for the F-15E and the F-16 upper surface color, it can also be used for markings and false canopies etc.. It is the upper surface color of the modern AV-8B scheme.
Dark Gull Grey is the spec color for the cockpits of most post-1950s aircraft, USN or USAF. It is also a side-color element on modern USCM AV-8Bs
Light Gull Grey is basically only applicable to Vietnam (grey:white) through 1970s (overall grey) USN jets.
I would have included 36270 as the scale-correct color for cockpits as well as the standard upper fuselage 'hood', inlet top and vertical tail and ventrals color for the F-16. Indeed, without this color, it is basically pointless to have the Gunship color for the most numerous USAF teen fighter.
Also missing is the FS36176 for the Mod Eagle as it is now applied to the the F-15 and some F-22s, along with it's countershade: FS36251 Aggressor Grey.
Finally, for those looking to do the new F-35A scheme (and some F-16s/22s), the official FS match is FS36170-
http://www.airliners.net/photo/USA---Air/Lockheed-F-16CJ-Fighting/2145681/L/&sid=352931dc7d298d1682b62e82352ea434Which, as you can see, is a metallic gunmetal or dulled bronze shade and so may need a combination clear/flake color to get right.
CONCLUSION:
Buy an FS595a color wheel and get your shades straight Italeri. Include Black, Silver and White (landing gear, weapons bays, cockpit side consoles and knobs) in all fast jet packs and make sure you have both the latest shades and the _correct_ colors for the period.
Aluminum, Burnt Iron and/or Jet Exhaust colors are also appropriate for most high temp and exhaust areas as the rear underside of the F-15 and it's featherless nozzles.
With this in mind, you could vary your sets and make more profit from sales of each one:
USAF/USN Vietnam colors.
USN/USMC Modern colors.
USAF Modern colors.
I would also include paper or flash memory stick (jpeg) 3-view drawings of common aircraft types with accurate patterns and color callouts that are compatible with the included colors.
If these were keyed to specific, special, markings you could also open a decal line.
As a company, Italeri needs to distance themselves from a bad past reputation for half-baked research and poor quality control. With all the East Asian startups now flooding the market, Italeri can no longer count on a 'first to market' business model to lock down specific airframes.
Your recent F-104 is a key example of this. Minor mistakes on a very expensive kit add up to an opening for AFV Club to sell theirs as the 'high quality' alternative.