I found the screen too bright on the q for reading at night.
I didn't like how candlelite also turned off kb backlight.
here's a little trick I just came up with.
Some time back I bought a roll of that window tint you can buy from Home Depot. I had some left over. so I cut a couple squares about screen size.
It stays on great because of static.
I keep them by my bed for night time reading.
If one ain't enough, use 2.