To set the default line/fill and text settings for graphics, click on the small 
button at the bottom right of the Add→Shapes ribbon button group.
The default settings pop-up consist of three separate tabs.
•The first tab sets the line of border style.
•The second tab sets the fill style.
•The third tab sets the font properties.
Shapes Default Setting pop up dialog
Lines properties
See Line Styles for more info.
Fill properties
See Fill Styles for more details
Font properties
See Fonts for more details