Social Pro Daily Facebook Messenger No Longer Underestimates the Power of the Dark Side Users can access dark mode by sending the crescent moon emoji Dark mode was one of the features detailed when Facebook introduced Messenger 4 last October Facebook By David Cohen March 4, 2019 Dark mode has finally come to Facebook Messenger. David Cohen @9Number9 david.cohen@adweek.com David Cohen is editor of Adweek's Social Pro Daily. Recommended videos