Restricting access to the Themes setting panel

Hello, I am using Easy Blogging to direct my multisite users to the WP areas I want them to be able to edit. However, I noticed that if they simply add this to the end of their url “/wp-admin/?page=woothemes” then they can begin to change the setting I have setup for them when the choose a Blog Template. Is there a way to restrict them from doing this? I am using a roles manager, but not sure what setting I would select to restrict this page.

Thanks, Chris