Think your fundementally right Max, but I also think mine has had a respray at some point, (Well I Know it has had a full one actually) but they must have used a different shade of white. My only option it seems is to take it the Paint supplier and ask them to mix me the closest match they can. Presumably they can then give me he formulae so i can match it again if I need to.
Or I could respray the whole thing rosso....or maybe Ochre....
