You use red (wich is usually means negative, no, stop) to enforce something that you want the kids to view as positive, yes, go. Sounds wrong to me.

I would connect it to a microphone and let it go red when the microphone picks up a lot of noise and green when there is no noise. If the lights are big enough you coud paint a smiling face on the green light and a frowning face on the red one. I'm not sure what to do with the orange one. :lol: