To make the transparent scrollbat this is the script.
Code:
html {background-color: #CEE7A3; 
scrollbar-shadow-color: #CEE7A3;
scrollbar-highlight-color: #CEE7A3;
scrollbar-face-color: #CEE7A3;
scrollbar-3dlight-color: #CEE7A3;
scrollbar-darkshadow-color: #CEE7A3;
scrollbar-track-color: #CEE7A3;
scrollbar-arrow-color: #CEE7A3;}