The extension popups don't seem to support the dark mode media query.
The only way the query gets detected is when a color-scheme is added: <meta name="color-scheme"content="light dark">
Dark mode for extension popups
See feedback assistant bug report: https://feedbackassistant.apple.com/feedback/9612492
Thank you for the report!
You're welcome. Please let me know if you need any more info. Thanks
Sample extension can be found in the feedback assistant or using this link: https://static.jeurissen.co/9612492-apple-darkmode-issue.zip
In Chrome and Firefox, in dark mode the extension colors green. Yet in Safari it is blue. Basically it doesn't recognise the dark mode media query.