Hello Dave,
The deck is currently natural as in the photo below, I have not seen it painted black.
The gratings forward of this deck are currently painted black, but look at the light effect in the top right hand corner, it looks bleached out, with the sunlight on it.
On this picture which I took in 2006, with full sunlight on it, the grating appears bleached out.
I went with natural deck colour for the half deck, and black for the grating on my Victory build.
Regards,