OptionalbackgroundOptionaldatabaseDatabase being drawn. Runtime type is AcDbDatabase (data-model); typed as
unknown here so graphic-interface does not depend on data-model.
OptionalfallbackFallback RGB when the resolved color has no concrete RGB value.
OptionalforegroundRGB used when the resolved color is foreground (ACI 7) on a dark background.
OptionalforegroundRGB used when the resolved color is foreground (ACI 7) on a light background.
Whether the current draw background is dark.