Hmm then it will be lighter...
That's absolutely fine. It's never going to exactly match the finish of the T/T, anyway, so if there's going to be a contrast, it may as well be one which shows the natural grain and beauty of the ebony wood!

Please polish it as highly as you can, too, as there is a shiny effect to the appearance of the MK5G Techy, so a matt finish wouldn't look right.

...but that photo / lighting doesn't really capture the effect it was just a quick shot with the DSLR on auto and under flash so looks blacker / not as alive as it will.
Yup, sure. "Alive" (and super-smooth, to the touch) is exactly the finished effect I'm looking for

Also, as discussed, try to use long black allen bolts (if possible) for securing the whole assembly, as I prefer the look of those, or if not, some other fixings with heads that are as unobtrustive as possible, perhaps countersunk, (anything but phillips screws). I'll leave the exact choice up to you. Cheers, dude!

Marco.