
(Also, the brightness of light backgrounds are just a little bit darkened now.)
It is interesting. What truly makes you feel "oh, my eyes get burned" is not the lightness itself, but the intensive alteration between dark/light. It must have something to do with eye pupils. On watching dark areas your pupils are dilated, then all the lights around there surge into your eyes.

So despite the fact that the right one is brighter in terms of pure proportion of light/dark, it looks much easier on the eyes.
It's getting better all the time, better better better



