How can I have colored list bullets?

You can adapt the stylesheet to have colored (in this case orange) list bullets like that:

ol,ul {
margin-top:1em;
margin-bottom:1em;
margin-left:2em;
position: relative;
}

li{
list-style:none;
}

li:before {
	content: "◾";
	position: absolute;
	left: -1.2em;
	color:#F80;
}

If you want to have multi-colored bullets or little pictures, just make us of a litte picture, 12x12 pixels or so:

ol,ul {
margin-top:1em;
margin-bottom:1em;
margin-left:2em;
list-style-image: url('images/bullet.png');
}