Hello,
I was making a dark theme for my browser with some color accents different from the stock dark theme cause I got bored of it. Unfortunately I noticed that the dark colors I chose didn’t apply to the ‘Firefox Home’ screen (the screen you get when opening a new tab - not window) like they do in the stock dark theme. This causes for some uncomfortable eye-burning moments while browsing at night. If anyone knows a solution to this, please let me know.