Over the years I have joined in on discussions relating to "GULF" colors.
As I see it you can go one of two ways. If you paint your car with Porsche Gulf Blue and Porsche Gulf Orange you will have a car that doesn't match Wyer Team “Gulf Racing” colors.
Remember Wyer was racing GT40 Fords before Porsche contracted them.
When I painted my son's car to Wyer Racing Livery I selected the colors. I first investigated Porsche Gulf blue. Immediately it became obvious this is the wrong color. I selected Porsche polar blue. Next I shot Porsche Gulf orange and it was too pale. I reshot with Chrysler Orange minus black tint.
Later I was looking at a mid 60’s color chart for Ford trucks and the “GULF” colors were there.