[Plugin: PHPLeague] Appearance of the tables

Hi guys.

I’ve got a problem with PHPleague tables. I saw this screenshot:
http://ruhaxball.org/wp-content/uploads/2012/06/screenshot1.jpg

But when I publish the table, its appearance isn’t as good as on that screenshot. My table is white background… How can I fix that?
Thanks.

http://wordpress.org/extend/plugins/phpleague/