gazebo_models/mailbox/materials/scripts/mailbox.material

material Mailbox/Diffuse
{
  receive_shadows off
  technique
  {
    pass
    {
      texture_unit
      {
        texture Mailbox_Diffuse.png
      }
    }
  }
}

material Mailbox/Specular
{
  receive_shadows off
  technique
  {
    pass
    {
      texture_unit
      {
        texture Mailbox_Spec.png
      }
    }
  }
}