Indeed. I dislike any kind of wallpaper except for just a single color:
gsettings set org.gnome.desktop.background picture-uri none
gsettings set org.gnome.desktop.background picture-uri-dark none
gsettings set org.gnome.desktop.background primary-color '#201b30'
gsettings set org.gnome.desktop.background color-shading-type 'solid'
Indeed. I dislike any kind of wallpaper except for just a single color: