How do I make a Bi-Color LED turn Red when “Overloaded” ?

[retrogleam]

I have the Celsius Preamp (Boss CE-1 Preamp) and I’d like to have the LED Green when pedal is engaged, and turn Red when the preamp starts Clipping. I’m new to this so I have no idea where to begin. I have a Bi-Colored LED already, I just need to figure out the wiring and how it determines the clipping threshold. Anyone have any insights?? Is this even possible with the circuit I have?

Thanks!

 

[jwin615]

It's not possible with that circuit alone. It would require about 50% more circuitry. At least in the manner I've theorized doing so--split on the buffer into a opamp stage with a gain of 1. Add a LED + another diode in series on the output to get ~4Vf (circuit dependent)and tie them to ground.
This would only indicate clipping threshold on half the cycle but good enough for a crude attempt.
There are more refined versions like this one.