Sponsors Module Background

Hi,

How do I change the background color of user9 position?
I can't find it under the template manager.
Do I have to edit the template files?

Thank you!

In layout.css:

.footer_wrap {
padding: 15px 30px;
line-height: 16px;
background: #eee;
border-top: 1px solid #999;
}


change background property

Thank you!