I would like to restrict any color documents being printed on the C300. We have it setup to enter a password for colored copies, but not when you are printing. Can this be restricted?

You will need to enter the admin mode, User Authenication/Account track & select either user authentication settings or account track settings depending on which you have setup ( you can check this by going into the general settings in user auth/account track ).
Once in your chosen method select the user/s you wish to restrict and select edit.
Select output permissions and set colour to restrict and ok.
Do the same for each person you wish to restrict.
Once done you will need to go into the 'Print Without Authentication' button and select Restrict.
When you have done this you will need to add the users information and passwords into the print driver for the C300 for each users pc.
You do this by going into start, settings, printers, select the C300 & right click, select properties, go into printing preferences & select 'Authentication/Account track', enter the user name & password into the relevent boxes (either account track or user auth depending on what you have setup) and then hit ok & apply.
Do this for ALL USERS.

The settings should now be saved permanently and if the user selects colour and they are restricted it will not let them print.

Hope this helps.