"She is," Lydia agreed. "She's really smart, and she's traveled through time and space, so she knows a lot of things. I don't think she really has a job? But sometimes she plays the piano outside the Opera House."

For what it was worth, she had no idea that the colors had meanings: she just noticed that it had happened. "That's pretty cool. Does it feel weird when it changes color? Or do you not notice?"