Changing the CSS

I have downloaded WP-CommentNavi and also saw that on another pagination plugin (WP-PageNavi) that there is a WP Visual Pagination add on with a better CSS. I am trying to implement the black one (screenshot 1 from the WP Visual Pagination screenshots) into WP-CommentNavi. Is there a way to do this?

Thanks in advance,
Paul

http://wordpress.org/extend/plugins/wp-commentnavi/