I was worried that there would not be a dimming addon for web extensions. This one comes through with shining colors. It needs one little adjustment to make it perfect, a right-click to exclude site function. This would make excluding sites from dimming so much easier. The ability to fine tune the amount of shading is great and works flawlessly. A 5 Star if not for the lack of right-click to exclude. Hope that can be added.

Update. The developer added that feature and it is indeed perfect now. Thank you!