It is actually Testors Model Master US Helo Drab (FS34031). It comes in both enamel and acrylic. The enamel one is more of a used, faded color, while the acrylic is more of a freshly painted version of the color.
Here is a comparison between the two. On the left is a UH-60L I did a few years ago in Enamel Helo Drab (#2024), on the right ismy UH-60A MedEvac with the Acrylic Helo Drab (#4723) on it. You can see how the enamel is more gray and not as green.
Gino P. Quintiliani - Field Artillery - The KING of BATTLE!!!
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"People sleep peaceably in their beds at night only because rough men stand ready to do violence on their behalf." -- George Orwell