Yeah, they briefly had the black in stock a couple of months ago and I should have swooped. Global supply chains disruption no doubt. Hope they still make them.planetX have these Nitto ones in "dull" in stock, and seems to be 10% off today. But typically the "KDP" black are not currently in stock.
https://www.planetx.co.uk/i/q/HBNIBULL903/nitto-bullmoose-b903r-handlebar