jquery - Change background on scroll -

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How do I make background-color changes while scrolling, not particularly based on the top, but the base of the div Background on I do not know if you understand, but here is an example of what I want to do here like this site:. 

  $ (document) .scroll (function () {$ ('body'). CSS ('background-color', '# 9966' + ($ (this) .scrollTop () / 10))});   
  OR   
  $ (window) .scroll (function () {$ ('body'). CSS (' Background-color ',' # 9966 '+ ($ (this) .scrollTop () / 10));});

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