(Optional) An array of component values specifying the color to be used as the backdrop against which to composite the transparency group XObject G. This entry is consulted only if the subtype S is Luminosity. The array consists of n numbers, where n is the number of components in the color space specified by the CS entry in the group attributes dictionary. Default value: the color space’s initial value, representing black.

public const string BC

Public Const BC As String

public:
literal String^ BC