I figured it out, thanks to your clear description. I was overthinking it because it wouldn't let me place down any orb when my guesses were wrong so I didn't realize I had to return the orb
Thanks a lot for the quick response. I was able to mix the colours. My problem is that I can't seem to "confirm" or "check" my answer. Do I need to pick up the orb? I can't put it down anywhere else. I've unfortunately been stuck on this for a while