forceColor

Force printing in color.
[read/write property] forceColor([out, retval] VARIANT_BOOL *color) forceColor([in] VARIANT_BOOL color)
If this property is set to true, XpdfPrint generates color output, even if the printer appears to be monochrome.

This setting is only relevant for GDI printing, i.e., for non-PostScript printers, or if forceGDI is true. It is ignored when XpdfPrint generates PostScript code.

resetParams resets this to its default value of false, which means to generate monochrome output for monochrome printers and color output for color printers.

VB6:
pdf.forceColor = True
forceMono
printerSupportsColor
resetParams