Add the ability to choose a background from a color instead of wallpaper. In the new macOS 13 Ventura this has been implemented You can also make the wallpaper follow the color accent (if there is one)
I do not know if it will ever be implemented in the settings app but GNOME already does support this. It’s just that these settings are hidden. You can use these settings in the terminal as follows
# Disable Light Wallpaper Picture
gsettings set org.gnome.desktop.background picture-uri ''
# Disable Dark Wallpaper Picture
gsettings set org.gnome.desktop.background picture-uri-dark ''
# Set Background Color
gsettings set org.gnome.desktop.background primary-color 'blue'
gsettings set org.gnome.desktop.background primary-color '#ddd'
gsettings set org.gnome.desktop.background primary-color 'rgb(255, 255, 255)'
It wasn’t in the UI before either. I thought they were talking about removing the underlying GSettings schema because it was not being used in the GUI anyway.