It is indoors, though in a room with a lot of windows, if with deep overhangs. (It's on the floor of the zendo.) But most of the greyness of it is probably the color pick up on the phone - I'm running a beta community OS, and while there's a utility for adjusting to lighting conditions, it's frequently a little wonky - this was better than the supersaturated version, I promise you.

Sadly, all my students in the right age range are out of state. (One to Texas, one to Italy, one to Iceland. These kids!)