use dconf-editor
or gsettings
to change following properties:
org.gnome.desktop.background.picture-uri
file:///home/tle/Pictures/pattern4.pngorg.gnome.desktop.background.picture-options
'wallpaper'org.gnome.desktop.background.primary-color
#3c6eb4org.gnome.desktop.background.secondary-color
#294172
Create $HOME/.local/share/gnome-background-properties/pattern.xml
:
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE wallpapers SYSTEM "gnome-wp-list.dtd">
<static>
<wallpaper deleted="false">
<name>Pattern 4</name>
<filename>/home/tle/Pictures/pattern4.png</filename>
<options>wallpaper</options>
<shade_type>solid</shade_type>
<pcolor>#3c6eb4</pcolor>
<scolor>#294172</scolor>
</wallpaper>
<wallpaper deleted="false">
<name>Pattern 5</name>
<filename>/home/tle/Pictures/pattern5.png</filename>
<options>wallpaper</options>
<shade_type>solid</shade_type>
<pcolor>#05ac72</pcolor>
<scolor>#294172</scolor>
</wallpaper>
</static>