Abstract: A method is provided for analyzing the colour quality of a press pull as compared to a contract proof. The contract proof is scanned to create image data including colour data representing a scanned proof image. The press pull is also scanned to create image data including colour data representing a scanned press pull image. The scanned images are simultaneously displayed on a video monitor, and, the displayed images are searched for any significant differences in colour. A method is also provided for printing colour products on a colour printing press in a print run associated with a contract proof. The contract proof is scanned to create image data including colour data representing a scanned proof image. A sample printed colour product from the press is also scanned to create image data including colour data representing a scanned press pull image. The scanned images are simultaneously displayed on a video monitor. The scanned images are aligned and linked.