title: Angular Ng-Bootstrap Datepicker Calendar Day Background color
body: <p>how can I change the 1+ days background color on ng-bootstrap datepicker calendar, in the same way as the color changes when a day is selected. </p>
  
  <p>When a day is selected, it changes the div class to:</p>
  
  <pre><code>btn-light bg-primary text-white
  </code></pre>
  
  <p>Let's say that I want several days to appear as</p>
  
  <pre><code>btn-light bg-success text-white
  </code></pre>
  
  <p>or</p>
  
  <pre><code>btn-light bg-warning text-white
  </code></pre>
  
  <p>How is the best/easiest way to achieve this?</p>
  
  <p>Thank you</p>