****! It's not curious yellow. It is too yellow - not enough green. Now I guess I track down the PO and see if the dumb SOB knows where the paint came from.
If you do get the specifics on the paint I have a pretty decent collection of paint chip/code books. I might have the original formula if the paint is identified. I don't recall how new my books go because it has been a few years since I pulled them out. They do go back in to at least the 50's and I am thinking mid to later 70s.