Adjust the screen brightness right from your menu bar, just like the sound menu. The app gives you a smooth transition between low light and total darkness.
Chameleon is a quick and easy way to change your interface, accent and highlight colors. Right click on the bar icon to toggler between Light & Dark modes.
Mojave has a nice dark theme, but to change it you need to go click trough multiple screens to change the theme. Darksome lets you switch with a mouse click.
Quickly check for available resolutions, refresh rates, or retina capability on any of your internal or externally connected displays and projectors. Switch between aspect ratios or turn on mirroring with a single click.
Click on Displays icon in the upper-right corner of your screen and choose your monitor resolution among all supported resolutions.