How to apply different material to fragments inner surface

1.	Create Cube, this will be the cube which will be shattered to multiple fragments. 

2.	Set its name to "Wall", position to [0,0,0], and scale to [5,5,1]

3.	Add RayFire Shatter component to the Wall. 

4.	Create new Material asset in Project window and name it "InnerMaterial".

5.	Set InnerMaterial's Albedo color to Red.

6.	Select Wall.

7.	Drag and drop InnerMaterial from Project window to Inner Material field in Material group of properties.

8.	Click on the Fragment button. A new gameobject “Wall_root” with fragments as it’s children will be created.

9.	Start to drag Scale Preview slider from the left to the right. You will see that the original object's MeshRender disabled so it won't cover fragments and fagment's scale is getting lower so it is possible to see every fragment's shape and inner surface with Inner Material applied.

10.	Toggle OFF Scale button to reset fragment's scale and enable original object's MeshRender component.