Wall module has a folder for base template. But ho

Wall module has a folder for base template. But how can i achieve that the module reacts also to a different temlate then to the base folder.

For example is use a template called black, How can i change the module to use now also the black css in the wall module instead the base css.

I already made a folder in the wall modules template folder. 

Is it named the same as it is in the main template folder.  tmpl_black ?

If the two names match then you can either copy everything from the base folder and paste it into your tmpl_black folder or you can just include a few of the css files with your changes but the names of the css files must remain the same. 

Many thanks. I really forgot to add the tmpl_   to the naming in this folder.

You are welcome.