title: Bootstrap4 radio button background and fill color
body: <p>I was wondering how can I change Bootstraps radio button background color and fill color?</p>
  
  <pre class="lang-html prettyprint-override"><code>&lt;div class="form-check"&gt;
    &lt;input class="form-check-input" type="radio" name="radio" id="radio1" value="option1"&gt;
    &lt;label class="form-check-label" for="radio1"&gt; radio label
    &lt;/label&gt;
  &lt;/div&gt;
  </code></pre>