Well, I don't know for sure if this will fultill requirements. at the top of each "Column" it appears that you have a text box. You can try to put a background image in the text box. You could just use a solid color square, and then put yor text in. You might have to fight with the font color and background color to get a good match that is visible, but it could work. I don't know that you can add a background image to your other objects, and I didn't see a place where you can set background colors.