This class is a virtual interface for classes that represent the unnamed and named colors specified by the byLayer, byBlock, byColor, byACI, byPen, Foreground, byDgnIndex, or None color methods.

This class implements the entity color object that represents the unnamed colors specified by the byLayer, byBlock, byColor, byACI, byPen, Foreground, byDgnIndex, or None color methods.

This class implements a transparency object, which provides the transparency information about OdGiDrawable objects.