Resource identifier of the postscript file as returned by ps_new().
The parameter type can be
The colorspace should be one of
pattern. Depending on the
colorspace either only the first, the first three or all parameters
will be used.
Depending on the colorspace this is either the red component (rgb), the cyan component (cmyk), the gray value (gray), the identifier of the spot color or the identifier of the pattern.
Depending on the colorspace this is either the green component (rgb), the magenta component (cmyk).
Depending on the colorspace this is either the blue component (rgb), the yellow component (cmyk).
This must only be set in cmyk colorspace and specifies the black component.
The second parameter is currently not always evaluated. The color is
sometimes set for filling and drawing just as if
fillstroke were passed.