How do I to customize the look of an asp.net DropDownList?

I've been given a design to implement in an Asp.net website, and I'm struggling with some elements, particularly the DropDownList. What's the best way to change the look? I'd prefer to do something server-side as opposed to javascript, but I understand at least some javascript may b开发者_如何学JAVAe necessary.

In the end, it should look like this:

Have a look at this question - Is it possible to style a select box?.

The first answer points to a dead link, but the second answer suggests using JQueryUI.

http://jquery-ui.googlecode.com/svn/branches/labs/selectmenu/index.html