If you want to go a little deeper into the calibration, you can pick up an xrite i1display colorimeter, and some free calibration software like HCFR. Then you can get a more accurate grayscale, with which to adjust your color to.

If you really have the bug to calibrate it to a higher degree of accuracy, then for around a grand you can pick up an xrite i1pro Spectroradiometer. You can use this with the free HCFR package as well.

Add a DVD/BD that has the grayscale and gamut patterns on it, and use your BD player as your signal source.

Depending on what you can adjust in the user menus, you may need to get a service manual to get into the additional adjustments.