Events + Category Pages missing stylized buttons

Hello,

I'm trying to setup a category page with the Events + plugin, and it seems to be missing the nice stylized buttons. Here's the category page: http://ecrp.pottervilla.com/events/fair/ and here's the normal events page: http://ecrp.pottervilla.com/events/2012/07/ .

Am I doing something wrong? Is this a bug?

- Jonathan