title: How to change pelican-bootstrap3 background-color's code background color
body: <p>My pelican blogs uses theme pelican-bootstrap3, and the color of code is always grey, link below,<a href="https://i.stack.imgur.com/OPMcN.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/OPMcN.png" alt="enter image description here"></a></p>
  
  <p>I just want it to be <a href="https://i.stack.imgur.com/pP6gK.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/pP6gK.png" alt="enter image description here"></a>
  How to change its background-color to other colors.</p>