Since macOS Monterey Safari on the Mac has the feature to theme the adress / tab bar based on the website that’s open.
Would it be possible to implement that feature for app.plex.tv?
You can simply set it with the meta tag:
<meta name="theme-color" content="#ecd96f">
You could even set different ones for light and dark theme if your website supports them:
<meta name="theme-color" content="#ecd96f" media="(prefers-color-scheme: light)">
<meta name="theme-color" content="#0b3e05" media="(prefers-color-scheme: dark)">
Would be great to have that feature. Gets you a more native feeling and doesn’t distract you when you open Plex when having light mode on at your mac.