Something

<html>
<head>
    <style type="text/css">
        body { border:1px solid blue; }
    </style>
    <script type="text/javascript">
        function showLogo() {
            var startcolorR=64, startcolorG=63, startcolorB=79;
            var endcolorR=150, endcolorG=20, endcolorB=20;
            var tmpR=startcolorR, tmpG=startcolorG, tmpB=startcolorB;
            var num=20;
            var i=0;
        
            while(i<20) {
                tdiv = document.createElement("div");
                tdiv.style.float="left";
                tdiv.style.margin=0;
                tdiv.style.padding=0;
                tdiv.style.width="10px";
                tdiv.style.height="10px";
                tdiv.style.backgroundColor:"rgb(tmpR, tmpG, tmpB)";
                document.getElementById("logo").appendChild(tdiv);
                i++;
            }
        }
        
    </script>
    
</head>
<body onload="javascript:showLogo();">

<div id="logo"></div>


</body>
</html>