The social media app typically allows users to choose between a "Default" white background, a "Dim" gray background, or a "Lights out" black background — but Musk said the platform will "soon only have ‘dark mode.’"
"It’s better in every way," Musk said in a tweet early Thursday morning.
The comment came in response to another user who inquired if Musk would be changing Twitter's blue verification checkmark to a black-and-white one to match the new "X" logo.
"Blue tick or Black tick?" the user initially asked. "I like black too but it won’t work in the dark mode," they also said.
Then Musk chimed in to tease the new design.
Several people who responded to Musk complimented the change.
"Genius idea," one user wrote.
"Can’t wait," responded another.
"And soon we shall bid adieu to the Twitter brand and, gradually, all the birds," he tweeted just after midnight Sunday.
Elon Musk, billionaire and chief executive officer of Tesla, at the Viva Tech fair in Paris on Friday, June 16, 2023. (Nathan Laine/Bloomberg via Getty Images / Getty Images)
The new "X" logo was also announced Sunday, and the following day, it was formally changed on the social media platform.
The logo was also projected onto Twitter’s San Francisco headquarters.
Musk, who also owns SpaceX and Tesla, has said he hopes Twitter/X will exist as a global chat service that allows users to easily write messages, share videos and produce and market content. The app will also shift to better allow users to create content and personally profit through subscriptions.
The Tesla and SpaceX chief finalized his purchase of Twitter, Inc in October 2022 for roughly $44 billion.
"The bird is freed," Musk tweeted at the time.