Yes, unfortunately I have a replacement black plastic cowl. I was really hoping it would be an original and just painted black but thats not the case.
I think you are right, looking back at the pictures it's not quite the right. I had my doubts about it hence asking for opinions. I really could do with a colour swatch number (Pantone, RAL etc) from some ones existing cowl as it is just too difficult to judge it from pictures with differences in light/camera exposures. The paint is not going to be cheap but I may just have to take a leap of faith otherwise.