Editable stylesheet for Directory

Hi!

For my theme I needed to change the style.css file (@ /wp-content/plugins/directory/ui-front) so that the Directory will look good.
When there is a update it probably will get overwritten.
Could it become editable?

In my case I needed to change this part of the stylesheet:

.dr_list_grid li{
	float: left;
	list-style: none outside none;
	min-height: 5em;
	padding: .5em;
	width: 23%;
	margin-right: 0%;
	border: medium solid #eee;
	border-radius: .4em;
}

Thanks,
Age