The temperature and fuel gauge cover can be pulled out by hand. I'm not saying you should do this as the part is not sold individually. I pulled it straight out (toward me) using my thumb and middle finger. Slowly, then I stopped pulling once it released itself to make sure nothing was attached behind it. I'm not saying you should do this. Nothing was attached. There are four square tabs on the perimeter of the cover that hold it in place, and they snap right back when pushed into place. I'm not saying you should do this, but I then masked the window of the cover and painted it black.
The job is not perfect, but the results are so much better than how it looked from the factory.
Now if only one of the carbon fiber vendors would create and sell us a snap-in cover for the rest of the bezel, Nissan could learn a lesson on how the instrument panel should have been designed originally.
Cheers