I've taken some photos of my Glo. https://www.mobileread.com/forums/album.php?albumid=928
The pictures definitely don't do the screen justice - the fuzziness is down to me, not the Kobo.
There was a fluorescent light on in the neighbouring room, hence the shadows on the right hand side of the screen.
I tend to read in bed with the brightness on the lowest setting, but I do keep the black light control on to mask the LEDs.