Hi and welcome @sardonnen, enjoy this forum!
There is no color standart at Normag-Zorge, execpt for the red color, that is "RAL 3000".
The manufacturer bought green color depending on the price and availability.
You are free to decide from RAL6000 to RAL6011, but our favorite colors are the first and the last one (6000 or 6011).
When you can read and understand this german thread,
this can be helpfull for you, too.