LG Plasma color temperature
Warm = 6500K
Medium = 9300K
Cool = 11000K
It is reported on all the service manuals (I have many, 2008 and 2009 models).
Of course you will never find that values being perfect out-of-the-box. About Warm, it could be between 5500k to 6500k depending of the IRE value you are checking with a meter (colorimeter). That's why, on the Expert settings (Advanced) you will find the white balance settings (2 points or 20 points). If you have a meter and the right software (the free HCFR or the Calman) you can get it calibrated so that you will have 6500K at all the IRE points. Same thing for Medium and Cool.
Sometimes people don't like the Warm color temperature of their HDTVs because they are used to spend a lot of time in front of their pc monitor, which usually are not setted to 6500k. But that's wrong . You should have all your display working at 6500k when you watch video (Channels televisions, DVD, BD and so on).
That's how it works.