I'm not sure about that. I had friends who had those and their glasses would darken up in rooms with lots of windows or fluorescent lighting

 

My windows are 10% never really thought about tintin the moonroof. But it comes already tinted so I wouldnt touch it.

 

My transitions lenses are new (within the past month) and I think they changed the process a bit. Now, they transition quicker, have a darker gray tint (not as purple or muddy brown as before), and they will turn even with little sunlight. It's perfect for me. They tint relative to the amount of light being absorbed, so it's a nice balance when I'm in my car with 15% window tint rear/sides. The factory sunroof tint is perfect for me and I wouldn't consider tinting the front windshield, talk about driving hazard..

 

Yea, I thought about tinting the front window, but then I decided against it. Dont wanna get stopped for BS like that.