That's so TYPICAL!!
An over bright, over saturated ... over the top picture is what you will typically see displayed in the store using presets in the TV that are NOT set to the international standard Rec. 709 colour gamut. This is the standard that todays film and video content (Blu-ray, DVD, etc.) is mastered to.
As a result, you are not experiencing all your display has to offer!
But don't be upset with the manufacturer. It's simply too costly to properly calibrate in the factory. Also, it's an extremely competitive market out there, and they need to do what they can to get your attention on their products.