Umarım faydası olur.
<style type="text/css">
body
{
scrollbar-face-color:black;
scrollbar-arrow-color:white;
scrollbar-track-color:red;
scrollbar-shadow-color:blue;
scrollbar-darkshadow-color:green;
scrollbar-highlight-color:purple;
scrollbar-3dlight-color:yellow;
}
</style>