Interesting tech, but on a very restricted demo it was wrong a huge number of times for me.

I'd recommend adding a note that the lamp itself will go red in response to "ok lamp", at least I think that's why it was doing that - it was a bit confusing and to see the first thing happen after saying "ok lamp, blue" having the picture of a lamp go red was not hugely encouraging initially. Perhaps add "listening for colour" or something.