Print report as grayscale / gresycale using engine

Hi,

I develop lovely color reports, some with logos, etc.  Some of my clients want to be able to see these on the screen in their full-color glory, but print them in grayscale.

Is it possible to force printing as grayscale in the report engine object (CrystalDecisions.CrystalReports.Engine.ReportDocument)?

Any information will be appreciated.

Scott