you can use following style
.setScroll
{
scrollbar-base-color: WhiteSmoke;
scrollbar-3dlight-color: Blue;
scrollbar-arrow-color: Red;
scrollbar-track-color: WhiteSmoke;
scrollbar-shadow-color: Blue;
scrollbar-darkshadow-color: WhiteSmoke;
scrollbar-face-color: WhiteSmoke;
}