One look at your landing area and I thought: Testors Euro 1 Gray (#1988) - although an "Engine Gray" I think is matched better by their Gunship Gray (#1923), or - for a "scale-effect-black" - I might also use their Panzer Gray (#1950).
Your Deck Blue, on the other hand, has me totally stumped - especially if you lightened it. The closest I could guess - especially if you had added dark blue, or black to it - would have been Testors Intermediate Blue (#1920). Or possibly, I suppose, you could get close to your deck color by lightening the Gunship Gray, above, which has a notably blue cast to it.
So, tell us what did you use, Kevin??!