That looks more like "Turkey Green" to my eyes. My 69 912 was originally "Golden Green" and it looks like the zinc chromate stuff you'd find in a WWII airplane. If the car in the original post is supposed to be "Velvet Green" by Porsche nomenclature, it looks nothing like "Velvet Green" in VW nomenclature during the same time period, such as on a Type II transporter.
Here are some 912 colors:
912 Colors - 912 Registry