scrollbar colors

[Silla]

Hey, I'm a newbie here. I just registered a guestbook and was wondering if it was possible to change the colors on the scroller in the gb. Here's the code I use on my website:

<style type="text/css">
body {
scrollbar-arrow-color: #F0C8E0;
scrollbar-base-color: #F0F5F8;
scrollbar-dark-shadow-color: #F0C8E0;
scrollbar-track-color: #80A031;
scrollbar-face-color: #80A031;
scrollbar-shadow-color: #F0F5F8;
scrollbar-highlight-color: #795D4E;
scrollbar-3d-light-color: #F0F5F8;
}
</style>

I know very little about html and css codes so I'm pretty much just frankensteining my way through it.