Using your graphics card software, adjust your desktop colors and raise the brightness of "Red" and "Green" by 10 units. That's kind of annoying, right? Now imagine that your display always has extraordinarily vibrant reds and an ugly green tint. That's the ZR30W in a nutshell because it has no sRGB emulation or OSD. That means calibration has to be done through a color profile (no hardware LUT) and colors will always be oversaturated like this if you're not using a color managed program.
Agree, I have a 3007WFP-HC and this has the same problem. I think all of the 2007 era 30" panels had this problem.