title: Background color not rendering properly outside of the viewport
body: <p>Ok, this is a tricky one..</p>
  
  <p>On my website, when I want to change the background color on scroll, the background doesn't render properly outside of the current viewport. To reproduce this, go to <a href="http://thierry.zweidesign.ch" rel="nofollow">http://thierry.zweidesign.ch</a> and change the background color on the body via the DevTools. It's exactely the same behaviour as changing the color on a scroll event.</p>
  
  <p>So confused..</p>