title: Fade in hex colour based on a scale
body: <p>How do you fade in a hex colour? based on a scale of 0 - 100.</p>
  
  <p>Say I want an element to be green when awarded 100, and white when 0, with all the shades in between.</p>
  
  <p><strong>Update</strong>:
  HEX>RGB>HSV - Helpful collection of routines here:
  <a href="http://php.amnuts.com/index.php?do=view&amp;id=16&amp;file=class.image.php" rel="nofollow">http://php.amnuts.com/index.php?do=view&amp;id=16&amp;file=class.image.php</a></p>