title: i want to add a color filter to the imageview
body: <p>I'd like to add a <code>ColorFilter</code> to <code>ImageView</code>.</p>
  
  <p>Currently I'm using:</p>
  
  <pre><code>ImageView iv = (ImageView)findViewById(resIdOfImageToFilter);
  iv.setColorFilter(Color.RED, PorterDuff.Mode.SRC_ATOP);
  </code></pre>
  
  <p>I've checked Multiple Modes in <code>PotterDuff</code> such as <code>SRC_IN</code>, <code>SRC</code> etc., but I'm not getting any difference in any of the modes... All mode turns the whole <code>ImageView</code> in perfect Red color.</p>
  
  <p>I need to blend RED color in the existing image so that image will look with a REDDISH tinge....</p>