Both color correction and density are hard to "calibrate" with no ~standard~ to use. Pantone is a good start for print output but seeing stuff on various monitors and with different software makes consistency a real crapshoot.

Adobe and a Pantone reference number can help. You have to set up the monitor (calibrate it) to render what the final output should look like. Use Disney or Warner Bro's. cartoon standards to calibrate the monitor/printer output. Those guys are *PICKY* about output. ;-)