Whites too white on my ST60

[volcomsocal]

I've had my 60" ST60 for about 4 months now and it's worked great. I've calibrated all the settings to make the picture look fantastic. BUT, the whites are just too darned "bright". I've tried adjusting all the settings that I thought would fix it, but haven't been able to solve it. Anyone know how to bring the whites down, or darker, on my plasma? Adjusting contrast and brightness doesn't seem to do it. All that does it simply darken the whole picture. Thanks in advance.