Formatting objects, layout parts, and the layout background
You can change the formatting attributes of objects, parts, and the layout background to customize layouts. You can fill objects, parts, and the background with a solid color, a color gradient, or an image. If you set the fill to transparent for objects in the foreground, then objects, parts, or the layout background will show through. In addition, you can specify that objects and parts display a border and then customize the color and line style of the border.