I am also looking to do this.
What i see on the screen is a red background and apointments in white with
the tag color for Travel Green Phone first is Yellow Ect
the tag color is printed but not the background ( My work got a color laser )
they used to have black only and no color ink printer.
some time back i am sure i switched off print i color (print : Select
style : click the box print in grayscales ), thats how i got it to print in
black now unchecking the box no background color .
i know it can be done i have seen pages printed looking like screen
yelow background ect.
