The alloy tank on the naked version is first polished to perfection, and then scrubbed dull, by hand, with scotchbrite! I know cos I had it explained to me at the factory last week!
The dull tank works wonderfully on the naked, but, it is part of a package including clear powder coat on the frame showing the welds, and mat finish carbon fibre.
IMHO, if the rest of your bike is gloss paint and shiny alloy, you need a polished tank.
The Norton alloy tanks are works of art, the underside is as impresssive as the top side. They take something like 3 days to make and half a day to polish.
If black and gold didn’t look so ‘right’ I’d be very tempted myself!