title: How to flip between background image and grey color on touch and release of imagebutton?
body: <p>I am currently working on developing an app with Android.  I am new to the game so I could use a little help.  I have a page filled with ImageButtons with a few different images.  When they get pressed I want the background of the button to go grey and switch back to the original picture when the user is no longer clicking the button.</p>
  
  <p>Thanks for the help!</p>