title: Gradient texture background
body: <p>I want to create a dark grill texture that fades to black for a configuration screen under a page curl effect.</p>
  
  <p>Garmin StreetPilot Onboard uses something like this:
  <a href="http://www.pcmag.com/slideshow_viewer/0,3253,l%253D286397%2526a%253D286507%2526po%253D7,00.asp?p=n" rel="nofollow">http://www.pcmag.com/slideshow_viewer/0,3253,l%253D286397%2526a%253D286507%2526po%253D7,00.asp?p=n</a></p>
  
  <p>How do I programmatically create a background such as this? I really don't want to include an image the size of the iPhone screen; this seems the lazy approach.</p>