How to get rid of transparent middle part?

Want to change the transparent modules in the middle to a plain bg colour but can't find the corresponding css code. Hope you can help.

Cheers,
Ronald

There is a parameter for that , something like content background , but it would change also background color of other parts of site. To make what you want add this to bottom of template_css.css:

.content_pad
{
background-image:none;
background-color:#xxxxxx;
}