title: Dialog box background color on Blackberry
body: <p>In my application, I show alert if the GPS location invalid:</p>
  
  <p><code>Dialog.alert("Current Location info not available..");</code></p>
  
  <p>I want to change the default background color and text color of the dialog alert. I need transparent silver color. How to create a custom dialog alert on Blackberry?</p>