I got my wheels back from the refurbishers last night - I am really happy with the finish. Here are some photos - they don't show them too well as there was bad lighting and it was a cheap cemera, but you should get the idea.
I had my standard Astra Coupe Turbo wheels refurbed. All scratches were removed and they were powder coated in light anthracite, then the faces were diamond cut and the whole lot laquered. They really suit the colour of my car well.
This close up shows the contrast between the two finishes, but does not represent the real colour as in the above two images.