title: Semitransparent Textfield
body: <p>How do you make a JTextField semi-transparent? I need about 50% alpha for the background of the text field.</p>
  
  <p>I have tried <code>textField.setOpaque(false)</code> then <code>textField.setBackground(new Color(0,0,0,128))</code>, but it ended up completely transparent. I also tried it without setting opaque to false and the textField became less transparent every time you type.</p>