You can change the look of an exterior structure by applying different colors or materials to it.
To apply different colors or materials to an exterior structure:
Display your model in 3D, and make sure the structure is visible in the view.
Select Edit
> Materials Paintbrush, or click the Materials Paintbrush button
on any tabbed toolbar.
In the catalog panel, select the color or material you want to apply.
Click on the component you want to apply the material to. Some structures can have different materials applied to individual parts. For example, the roof of a shed can be different from the shed’s walls.
When you are finished applying materials, right-click and select Finish.