This panel controls the color, opacity and “sidedness” of attached object.
Color
This attribute specifies the surface color "Cs" of the attached objects. This color can be overridden by the attached shader; shaders translated from Maya HyperShade shaders will usually multiply their base shader color with Cs. This means that a single hypershade shader can have a white base color and be assigned to multiple objects; each object can defined their own surface color value so they all have the same shading look but a unique color. Photons will only use this color and ignore both types of shaders. The default color color is white (‘1.0, 1.0, 1.0’).
Opacity
This attribute specifies the surface opacity "Os" of the attached objects. Darker values are less opaque. This color can be overridden by the attached shader. The default opacity is completely opaque (‘1.0, 1.0, 1.0’).
Double Sided
This attribute controls if only the object’s front side (the side pointed by the direction of the normal) is visible, or if both the front and back sides are visible. When this attribute is on, the object is visible on both sides. This attribute is on by default.
Double Shaded
When this attribute is on, each surface is shaded twice: once with the normals in their usual direction and once with the normals reversed. This allows thickness to be given to a surface with displacement or to avoid shading artifacts where a transparent surface changes orientation. This attribute is off by default.
Reverse Orientation
If the surface is one sided and this attribute is turned on, its orientation will be reversed. This attribute is off by default and has no effect when the Double Sided attribute is turned on.