On Exoplayer 2.16.1: Light mode:  Dark mode:  It seems that the numbers are adapted to black/white depending on light/dark mode. (ref: https://github.com/google/ExoPlayer/blob/3509f50783967f8de23db17ea5c4b65732434dd0/library/ui/src/main/res/values/styles.xml#L97)
On Exoplayer 2.16.1:
Light mode:
Dark mode:
It seems that the numbers are adapted to black/white depending on light/dark mode.
(ref:
ExoPlayer/library/ui/src/main/res/values/styles.xml
Line 97 in 3509f50