So this is a forum theme made for those people who want to be able to finish that one last post and go right to sleep without having to see that weird green glow that appears when you close your eyes. Installation is much easier than you might think. Go ahead to the Theme Central and follow the instructions there.
Since this is a ‘fork’ of NightUI, most of the elements will remain until the source is completely indistinguishable from the original. No, the grey parts are not intentional, they will change as the theme progresses. But if someone finds it nice, they might stay.