body
{
  background-color: #FFFFFF;
}

div#topLogoImg {
  padding-top: 13px;
  padding-left: 10px;
  width:68px;
  float:left;
}

  getBackgroundColor: function(el) {
    if (!el) return el.style.backgroundColor;
    
    // el.style.backgroundColor = "#000FFF";
    
    var rescolor = el.style.backgroundColor;
    var parentel = el;
    while ((parentel.nodeName != "HTML") && (!rescolor)) {
      parentel = parentel.parentNode;
      rescolor = parentel.style.backgroundColor;
      console.log(parentel.nodeName, "->'",rescolor,"'");
    }
    
    console.log("result color ->'",rescolor,"'");
    return rescolor;
  }

DIV ->'  '  
BODY ->'  ' 
HTML ->'  ' 
result color ->'  '