title: How to remove dir background in `ls -color` output
body: <p>I use default Linux Mint .bashrc, here is <a href="https://gist.github.com/anonymous/a5fa37b387d76de7c94c28afcfbab3ad" rel="noreferrer">full bashrc</a>, the output is like:</p>
  
  <p><a href="https://i.stack.imgur.com/OzcqG.png" rel="noreferrer"><img src="https://i.stack.imgur.com/OzcqG.png" alt="enter image description here"></a></p>
  
  <p>some dir has green background, How to remove it?</p>