In a print shop system including a plurality of printers and a print shop management server which manages print jobs, an improved method is described for controlling a document color detection method for purposes of assigning documents to appropriate printers for printing. A user interface is provided for the user to specify a set of criteria for selectively forwarding the color detection task to another server or for rejecting the print job. In a first embodiment, if one or more specified criteria are met, the print shop management server forwards the print job to another server to perform color detection. In a second embodiment, if one or more specified criteria are met, the print shop management server rejects the print job and notifies the user.