title: How to set background to a solid color programmatically in Gnome 3?
body: <p>I tried:</p>
  
  <pre><code>gsettings set org.gnome.desktop.background primary-color '#000000'
  gsettings set org.gnome.desktop.background secondary-color '#000000'
  gsettings set org.gnome.desktop.background color-shading-type 'solid'
  </code></pre>
  
  <p>However, my background is still the default heisenbug picture.</p>
  
  <p>What setting do I have to change to use my color instead of the picture?</p>