Twin Huey paint ?

I'm assuming you're meaning the overall color of the helicopter fuselage.  You need FS16081 Navy Gray for that Navy color scheme.  In real life it's a gray that has a greenish blush to it in certain lighting conditions.  Testors has this color in both its enamel and acrylic lines.

The markings are for a Navy huey not a Marine.Yes I was talking about the over all color Joe I have seen several navy grays Gloss Gull gray, Flat gull gray, Dark ghost and light ghost gray and just light gray I worked on the LZ in the IZ (Green Zone) for 3 yrs and seen many marine 46's and hueys they looked looked like the Blue gray you are talking about   

urich wrote:

The markings are for a Navy huey not a Marine.Yes I was talking about the over all color Joe I have seen several navy grays Gloss Gull gray, Flat gull gray, Dark ghost and light ghost gray and just light gray I worked on the LZ in the IZ (Green Zone) for 3 yrs and seen many marine 46's and hueys they looked looked like the Blue gray you are talking about

Joseph is right and was talking about the Navy scheme as well.  That era it was a grey color that looked green or blue in some lights.