If I recall correctly, early beta versions of OS X Yosemite did have a proper dark mode, it's just that implementing it is harder than it looks. I personally like how Linux (Gnome & elementary) implements the dark mode on a per-app basis, so apps such as Terminal, Photos, and Videos would be dark while the rest would be light.
If I recall correctly, early beta versions of OS X Yosemite did have a proper dark mode, it's just that implementing it is harder than it looks. I personally like how Linux (Gnome & elementary) implements the dark mode on a per-app basis, so apps such as Terminal, Photos, and Videos would be dark while the rest would be light.