Fill styles define the filling of the object they are applied to. All fill styles are directly or indirectly derived from the NFillStyle abstract class (on its turn derived from NAppearanceStyle ). In this way all fill styles share the following set of a common features: 

• Image filters style (2D only) - gives you the ability to apply an image filter to the filling of all objects. Accessible from the ImageFiltersStyle property.
• Material style (3D only) - defines how the object reflects light (if rendered in 3D). Accessible from the MaterialStyle property.