Assigning a material to an element's surface - Paint bucket

The Paint bucket tool applies a material to the selected face of the element.
Elements that you can paint include architectural and interior elements.

Location: 

Interior > Material > Paint bucket

1. In the Material Browser dialog, select a material.

2. Move the cursor over the surface of the element to select it. Click to assign the new material to the surface.  The new material is assigned to all surfaces of the object that have the same material as the original material of the selected surface.

3. You can continue the command in a loop.

Example:

Assign new material to odd steps: