You can apply a different color or material to the boards, posts or rails of a fence. For example, you can select a different type of wood for a wood fence.
To apply different materials to a fence:
Display your model in 3D, and make sure the fence 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 material you want to apply.
Click on the fence component you want to apply the material to. Materials are applied separately to the individual parts of the fence (fence boards, posts and rails). Clicking on one component will apply the material to all components of the same type. For example, clicking on one post will apply the material to all posts.
When you are finished applying materials, right-click and select Finish.