11 Nov 2008 Color IQ at xrite.com
Try the following test of you color IQ:
http://www.xrite.com/custom_page.aspx?PageID=77
It should be a cobination of both you and your computer system’s ability to resolve hue (color) differences. In case your don’t score better than I do, you could try to calibrate your system with the monitor calibration wizard software. If this do not help, you could consider getting the spider from colorvision or get a new monitor or both. Should be a good excuse for the new purchase. 
For the record, the following is my answer to the test:
and my result:
