CasePress UpVote - posts and comments rating system.
Q: Сan I configure the plugin? A: Yes, go into Upvote Setting into admin panel.
Q: Сan I configure plugin styles? A: Yes, but for it, u need edit styles with specified programm, go into wp-content/plugins/casepress-upvote/styles, choose styles what u need, go into custom directory and edit!;)