Actually, not good (IMO).Dark mode
"Dark" or "silver" (or whatever it says) only applies if you're logged in.
So if you're logged out, if you're viewing from a "foreign" computer, you're served up Dark (which I find much harder to read, interact with).
Much prefer that the default be "silver", & if a user wants Dark, let them log in & set it as such.
(And if the setting were outside of User Control Panel, as in, per the site, then the pref could be set in a cookie, so that it would "stick"...)
(As it is, while https://noscript.net/ has a "dark/light" toggle, which would be otherwise fine, its' action does not effect any change in SeaMonkey.)
.)