VLC’s default theme on Android, the bright orange-and-white. To give VLC a dark makeover, first make sure you’re running the latest version of the Android app.
It’s not a true black theme, but VLC will have a dark gray theme throughout the app. Just follow these steps.
How to Enable a Dark Theme in Your Android Video Player
1- Open the VLC app.
2- Touch the hamburger icon in the top-left.
3- From there, select “Settings,”
4- Then scroll down and tap “Interface.”
5-Finally, just turn on the switch next to “Enable the black theme”
That’s it. Hope you find this helpful!