Hi Jon, the 2-tone Pacific scheme would be lower: M-495 Light Gray, FS36440, and upper: M-485 Blue Gray, FS35189. Yes, the navy schemes had "soft" sprayed demarcation lines, and you will go back and forth quite a few times with each color before you are happy, ask me how I know
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Color information from IMPS Stockholm
Urban's Color Reference Charts - Part I