Field WdgBCBlue, WdgBCGreen and WdgBCRed
Background color (custom). “Blends” a custom background color for the object, indicating the quantity of blue, green, and red to be used in the custom color.
Required: When BC is set to $Null.
An integer (0 to 255)
In most windowing environments, a “palette” is typically available from which a color choice can be made. Depending on your system, the palette may have as few as 16, or as many as 16 million, colors.
When you specify a custom RGB (red, green, blue) color, Zim looks for the closest-matching color already in use. As a result, the match may not be exact.
Predefined color constants, BC, FC, WdgFCBlue