title: Bash and dialog UI, how to change color dynamically
body: <p>I have a simple bash script, which I use to maintain some log etc files on a server, and most of the time the tools works in "normal mode". For UI I use the <code>dialog</code> tool.</p>
  
  <p>However, sometimes I have some condition that requires more careful attention, and I would like at those times to change the background color of dialog, to draw more attention to the issue.</p>
  
  <p>I know that by changing the <code>screen_color</code> attribute in <code>.dialogrc</code>, I can define custom colors for the dialogs, but that affects all windows, and is not what I want.</p>
  
  <p>Is there some way to <strong>dynamically</strong> set this variable so that only specific dialogs would have different colors, and everything else unaffected?</p>