Many Facebook users are confused, and a bit unhappy, after a technical issue caused their Facebook app icon mysteriously ... a blue "F" on a black tile rather than a white "F" on a blue tile.

Is your Facebook icon looking a little dreary ... It now is appearing as a black background with a blue "F," rather than the ...

Recently, many iOS users found the Facebook icon on their smartphones switching from blue and white to black and blue automatically. Many iOS users have been baffled by the unexpected color shift ...

The Facebook mobile-app icon suddenly turned black and blue — from blue and white — for some users. Does this mark Facebook's new dark, edgy era? Nope, it's just a bug, according to Meta PR.

You might have noticed that companies occasionally update the appearance of their apps to catch users' attention. For instance, Duolingo changes its bird icon to look like it's sick or melting if ...