Dark Mode Isn’t Just a Gimmick

I like having a darker theme available in the evening. But a dark page still needs readable text, clear controls and images that don't disappear into the background.

I'd make the choice explicit and check the whole interface, including forms and error messages. Reversing two colours isn't enough. The fiddly parts tend to be borders, shadows and muted text that looked fine on white. Those deserve the same attention as the main background.