What is the year of manufacture of your set? Tube or solid state? Before a certain point in time (certainly all tube sets), sets had less than 100% DC coupling, which means that on bright scenes, the lowlights would get too dark (blacker than black), and on dark scenes they would get too light (grayish). If it's one of these earlier designs, you are stuck with it.
Regarding the test DVD, it appears they are no longer made, although some (like Digital Video Essentials) are made in Blu-Ray form for HD sets. Warning: although these disks contain the test patterns needed, they generally are poorly explained in terms of how to use the patterns, and also some of them have terrible menu interfaces, as attested by many user reviews.
This page for one brand of test disk shows how to use the blue filter:
http://handforgedvideo.com/portfolio...olor-and-tint/
The idea is to get zero blue on bars that shouldn't contain blue (red, yellow, green), while getting the same amount of blue on bars that do contain blue (blue, magenta, cyan). But really, if your black and white picture is OK, you should be able to get the same result by adjusting for good skin tones.
If your problem is that the color changes when the scene changes, then no amount of calibration will fix it.