Change the tone Fund of the pages of my site - open to bidding

Hi, I want my pages to have the same style, model, of this page here, see the site: [login to view URL] Realize that there is a clear grey tone between: -the text article; -the sidebar´s widgets; -header; -etc This makes the site to have a very clean and organized look, so, I would like my site to have an identical layout as this one. Best Regards, Icaro Brazil