Create Wrapper elements to add different background outside of the grid for header,content,footer in Zen5?

Hi Zen people, I have been working with Omega so far and am still learning Zen and can't figure out how to add a simple wrapper element outside of my grid system so I can divide the page background in three sections for example:Page background behind Header is yellow, behind content its red, behind footer its say blue...

Kind of like in the screenshot...