hi ethic,
it's so simple to add the css in html use below
Code:
<style type="text/css">
<!--
body {
background-color: #E5E5E5;
scrollbar-face-color: #DEE3E7;
scrollbar-highlight-color: #FFFFFF;
scrollbar-shadow-color: #DEE3E7;
scrollbar-3dlight-color: #D1D7DC;
scrollbar-arrow-color: #006699;
scrollbar-track-color: #EFEFEF;
scrollbar-darkshadow-color: #98AAB1;
}
-->
</style>
Simply add as many as css tag in style tag
Regards
jitender