title: How to change the color of Title Bar in framework "JAVAFX“?
body: <p>I'm a beginner of JavaFX. Is there anyway to change the color of title bar. I just want to make the application all black. I have searched the JavaFX API, but I can't find any method to make it.</p>
  
  <p><img src="https://i.stack.imgur.com/yAMdW.jpg" alt="enter image description here"></p>