2.4.4.118 FillBkgndTrans
The FillBkgndTrans cell is a vScalar custom token grouping that specifies the transparency level of the background fill property color of a shape. It MUST have a ShapeSheet_Type or StyleSheet_Type parent element.
The value of the structure MUST be expressed as a percentage, and MUST be greater than or equal to zero and less than or equal to one. The value is normalized such that a value of 1 corresponds to 100 percent. A value of zero specifies there is no transparency; a value of one specifies maximum transparency.