The dark mode (or night mode) minimizes the white and bright colors of your mobile application interfaces to save your device battery and rest your eyes.
This seems to be the new trendy mobile feature: Messenger and even the Android settings menus now offer this option.
And you, are you a night mode user, or do you prefer the applications in their original colors?
Your Community Manager
100% of the time for the last 4 phones...and NOT thanks to Google who keeps removing it from the OS features the last minute before releasing it.
I buy an OLED screen device not because I want my retina seared, but because I can save some battery in addition to great colors and black levels.