<html>
<head>
<style type="text/css">
BODY{
scrollbar-base-color:#319dee;
scrollbar-face-color:#2733c5;
scrollbar-highlight-color:#3399ff ;
scrollbar-shadow-color:#000000;
scrollbar-3dlight-color: #cccccc;
scrollbar-arrow-color: #000000;
scrollbar-track-color: #319dee;
scrollbar-darkshadow-color: #000000 }
</style>
</head>
<body>
aaaaa

</body>
</html>


a me funziona!