Here’s how to enable browser dark mode (for the user interface as well as web content):
Open Browser.
In the address bar, type “chrome://flags”.
Search for “dark”. You will see the following settings:
Android web contents dark mode.
Setting this one on “enabled” will enable dark mode for websites.
Android Chrome UI dark mode.
Setting this one on “enabled” seems to add a “Themes” section in the Browser settings where you can select the dark mode for the user interface.
NB: Had to relaunch Browser twice in order to make it work.
That’s a good tip, here are some customisations of the /e/ browser appearance that I like.
I made the change’s in chrome://flags/
I didn’t change anything else as i think it’s possible to compromise security or do other damage.