Well bearing in mind the limitations of the computer etc. It's close to the actual model. That picture was taken in neutral daylight. As I said it was straight Hannants Light Slate Grey with a bit of lightening to match the paint chip. Although you can hardly see it in the photo the wheel wells are actually painted the oft suggested interior green Humbrol 78 which is just that little bit too green and too dark. The piece of metal had both colours on it and they were quite different.
I'm still hopeful that the paint chip will show up soon. It's like the holy grail at this point
If he ever gets the model made post a picture.