The notification font color changes depending on the wallpaper but for wallpaper that has a dark top you would think it should be white but it doesn't. For the preloaded wallpapers it seems to work but it doesn't for ones from your own gallery.
Thank you for your feedback. If you would like to suggest us a change to an existing feature, please leave a post in the Suggestions section with your ideas. We appreciate your contribution to the Beta program.
One UI Beta Team