Module suffix styling

If I modify the module suffix, the modules get stuck in the no styling mode. I tried to change the Latest News Module in the TOP position fro dark to green the module is now without any styling at all. No matter what I change.

http://www.choreographik.com/development/b5/1/

user: bluebird
pass: development

Hi

Please be sure You are placing a space in front of module class suffix. It's very important.