title: How to change the background color for dialog to black
body: <p>I am invoking a dialog with the following command:</p>
  
  <pre><code>dialog --inputbox "test" 20 0
  </code></pre>
  
  <p>I have set the screen color background color to BLACK:</p>
  
  <pre><code>screen_color = (WHITE,BLACK,OFF)
  </code></pre>
  
  <p>But the color is an off-black not black:</p>
  
  <p><a href="https://i.stack.imgur.com/EnJ4Y.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/EnJ4Y.png" alt="enter image description here"></a></p>