Certain TV manufacturers have a relationship with the Imaging Science Foundation, one of the leading companies that offers training for calibrators. TVs from these companies have specific calibration-friendly picture modes, such as ISF-Day and ISF-Night. These allow different settings depending on the amount of light expected in the room, making sure the TV looks its best regardless of the time of day. Other TVs might offer day and night modes as well, without the ISF connection. Again, this is all something to discuss with your calibrator.
If you've spent big bucks for a big screen, don't accept the mediocre factory setup you get out of the box, which is only made worse in shipping the set from the manufacturer to the dealer. Pay an ISF trained service person to calibrate your set's color temperature and, if need be, adjust its convergence and optics. Spending thousands on a set and then saving a few hundred by not having it calibrated is just plain dumb.
This advise is as current today as it was when the CRT technology ruled the display world. Even though the tech has changed, how TVs are set up to suit sales and marketing objectives over fidelity has not changed at all.