I like it, the pity it can't be used for any video streaming on the web. Anyway, I suggest to set a b/w icon on the toolbar whenever the Addin is either paused or when it doesn't detect video in the current Tab

i wanted something to add custom color settings for steam deck perfect settings for steam deck oled in display settings gamma not the extension 0.95 gamma apply system wide apply extension settings brightness 101 contrast 134 saturation 190 takes effect as soon as you play a youtube video.

Addon simply works immediately. You can adjust colors, e.g. on YouTube, video. Usually colors have reduced saturation, and even contrast, e.g. from cameras, old movies. You can brighten dark places. And in bright lighting, sometimes there is no black and dark colors at all. And it does not work globally. I recommend.