Spectrum + ambient LED lighting solution (without PC)

I have seen monitors coming out with built-in ambient lighting solutions.

I’m aware Spectrum doesn’t have LEDs on the back of the monitor for this purpose. But what would be the technical limitations of driving a third-party LED controller from the spectrum itself? Sending some RGB data about what is currently on the edges of the screen (from any input source) to a generic LED controller.

That would be a pretty cool add-on for people such as myself who regularly use multiple input sources (work Windows laptop, Mac, PS5).