I also had this problem. Did Nova launcher work?
Doesn't that only change the color when you pull down the panel to get to the quick settings? It didn't change the notification bar font color so I still can't tell which notifications I have when the wallpaper is light at the top.Yup, this solved the light background issue. Under Nova Launcher settings > Notification bar, check the box for the Dark icons box.
I'm having no luck finding a way to change the font color for notifications on the status bar. If that's not a feature, it sort of limits the backgrounds we can use. Anyone else know?
John
S10+