Microsoft Powerpoint 2016 provides facilities for beautifying shape objects by filling the shape object areas with solid colors, gradient colors, images and textures. This command is in the DRAWING TOOLS – FORMAT tab, the Shape Fill command button in the Shape Style group.
Or you can use Format Shape.
Read also How to Change the Style of a Shape Object
An example of its application can be seen in the image below.
You can read how to use the Shape Fill button and its various setting functions in Chapter 3: Presentation Slide Design Layout in the Sub Chapter Designing Slide Backgrounds.
Browse other guides Working with Shapes
