Heck, we never watch movies until the sun goes down anyway, so ambient light isn't a problem. I've heard that plasma can deteriorate in color saturation over the years, but so far I haven't noticed it. Matter of fact, I set the color saturation level down a notch, thinking that might delay that process, and if it does occur, I can always up it that notch to regain some of the color that is lost from degradation.
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