Lovin' the new Ozone menu. much easier to read in portable mode and faster too. However whenever I back out of the menu into a game I'm running, any borders from unused space (i.e. using core aspect ratios rather than filling the screen) become grey instead of black. My switch OS is using a dark theme and I'm using the default ozone setting that copies that choice.
Same here, but it's actually the background color of your theme, not just gray.