I updated this plugin slightly so I could style the different list items based on the mime type. With the following code I was able to style PDFs, DOCs and such different.
(I added '+' in order to note the changes I made).
Basically what this does is the following.
If you have a mime type of 'application/pdf', it adds a class to the
<li> resulting in
From there you can style the 'li' or the 'a' inside it however you want.
Hope someone finds this helpful...