When applying the new feature in the wallpaper settings for colour themes the text cannot be read as the whole text disappears due to the colours. Only some link or highlighted text will show apart from that nothing is visible. The icons from the notification panel also are too bright and you cannot/barely see the names and icons.
I had the same issue. The text colour was white on Turquoise Blue background onthe menus. I changed to Dark Mode as I couldn't find anyway to change either colour.