Paint Code for Lycoming BB-12 V-12 Engine

[ALF V-12]

Can anyone tell me what the proper paint code is for the shade of green used on the Lycoming BB-12 V-12 Engine?

Here's a link to an example:

1933 Auburn 12-161 Images. Photo: 33_Auburn_12-161A_CustomSpdstr_KM-07_EC_e01.jpg

Thanks in advance.