Ed,
If you can beg, borrow or steal a copy of Peter's Rockets of the World there is a B/W color pattern illustration showing the different colors in various cross hatches. Also a stenciling pattern of the booster body. The colors are light machined metal, dark machined metal, dull aluminum alloy, olive drab, and black. On pg. 149 in the 4th edition.
Good luck.

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I like the unusual, the off beat, the avant-garde. No 3/4 FNC for me!