title: javafx textarea background color not css
body: <p>I want to change the background color of the textarea in SceneBuilder.
  <br>I failed to change in the style menu :-fx-background-color.
  <br>So I found to change the background color by using the CSS file.</p>
  
  <pre><code>.text-area .content{
    -fx-background-color: red;
  }
  </code></pre>
  
  <p>But I want to change the other way except for the css file.
  Please give me a hint .</p>