How to change style and color of ToolTip in ASP.Net

Refer

http://www.menucool.com/tooltip/css-tooltip

http://davidwalsh.name/demo/css-attr-tooltip.php

http://csstooltip.com/

http://www.cssportal.com/css-tooltip-generator/

This way

  <asp:ImageButton ID="ImageButton1" ImageUrl="~/TempImages/Tulips.jpg" runat="server"
        ToolTip="This is a test tootltip" />
    <link rel="stylesheet" href="http://qtip2.com/v/stable/jquery.qtip.css" type="text/css" />
    <script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.8.3/jquery.min.js"></script>
    <script type="text/javascript" src="http://qtip2.com/v/nightly/jquery.qtip.js"></script>
    <script type="text/javascript">
        $(function () {
            $('input[title]').qtip();
        });
    </script>