Gets a color conversion Pipe which may be used to map colors
from one color space to another.
The Pipe maps from the provided color space source in the
context of the provided page, to the DestinationColorSpace
and RenderingIntent of the
Pipes are owned by the RecolorOperation which means that
repeated Pipe requests will use cached Pipes rather than recreating
the same conversion repeatedly.
While this greatly increases the efficiency of conversion, it
does also mean that at the point at which the RecolorOperation is
disposed of, all owned Pipes will also be disposed of. So if you
attempt to use a Pipe after your RecolorOperation has been disposed
of, an exception will be raised.