Hello,
my desktop Raspberry Pi 5 OS has the System theme set to dark mode, however this Raspberry Pi community forum website viewtopic.php?t=393059 is white and bleeding my eyeballs.
I searched this Raspberry Pi 5 community forum settings but found no obvious dark mode.

Perhaps I need to install a Firefox browser plugin?

Maybe 'dark mode' in the Firefox settings? ;)

Install the 'Dark Reader Mode' plugin.

As it is apparently board policy to disallow any criticism of anything, as it appears to criticise something is to criticise all the users of that something, I will no longer be commenting in threads which are not directly relevant to my uses of the Pi.