Help with MEC boxcar color

O Fenton Wells

I'm getting ready to do a MEC 1923 ARA (X29) car in the green with yellow logo.  I know TCP makes a green color but I read an article about a better green paint that wsn't a railroad color in a magazine article.  Of course I cannot find the article as my filing system is just too secure.  I should have worked for NSA.
Can anyone help or give a suggestion to a laquer base dark green for this project.
Thanking all in advance

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