When you set a new default fill or color, the next object you draw will have these style attributes. Designer gives you several ways to set default styles.
One way to set a new default fill or line style is to deselect all objects and then choose any fill pattern or line style from the format ribbon or Object Format dialog box. The default fills and styles for interior and line are shown in the status bar.
Another way is to select an object then click Set Default Style on the Format menu. All of the style attributes of the selected object, including interior fills, line fills, and line styles, become the new defaults.