Yeah, it would have to be built into the TV. I've seen some that work on PC, but computers can output arbitrary data through USB (like the colors that are appearing on screen). No TV that I'm aware of can be programmed in that way.

For this price, the light won't change color based on what's on-screen, but its pale white glow will still reduce eye strain at night, and can even improve your TV's perceived contrast ratio. If it sounds like voodoo, consider that the kit has a 4.2 star review average from nearly 200 customers, and at this price,…