Fill Properties Panel
This panel contains fill properties of the object that is currently selected. It will show the properties of the slide background if there is no objects selected.
No fill
The selected object does not have fill effect if this fill type is set. It can make an object transparent or colorless.
Solid fill
To add color and transparency to an object, click this option and select a color by clicking the color box to open the color picker.
Gradient fill
To add a gradient fill to an object, select the Gradient fill radio box. A gradient is a gradual progression of colors and shades, usually from one color to another color, or from one shade to another shade of the same color. You finish a gradient fill setting as follows: