https://wccftech.com/how-to-enable-dark-mode-on-macos-mojave-tutorial/

Apple had seen fit to release macOS Mojave yesterday on all supported Macs. The update brings a boatload of new additions like the new file sorting system, Dynamic wallpapers and more. However, one of the major and most prominent features which users were looking forward to was the system-wide dark mode. If you have already installed macOS Mojave on your Mac, here’s how to enable it.

As we have mentioned earlier, Apple introduced a dark mode in macOS Mojave, which shifts the entire interface to a more darker side. The new functionality works from the dock and menu bar to all of your available apps. If you don’t know how to enable it, follow the step by step instructions listed below: