Here is dang's answer regarding this matter:
https://news.ycombinator.com/item?id=23197966
edit: Updated comment and link to dang's answer
edit: Updated comment and link to dang's answer
But, with a site this big, any change is going to make someone unhappy. So, I can appreciate his hands off approach here.
It seems a bunch of people have tried it. Some notes:
* Why have people given it a blue-ish tint? HN if anything has a warm tint. I think a neutral grey is most acceptable.
* People that are suggesting high contrast for mobile: On mobile you have a plethora of apps.
* People that are suggesting high contrast for accessibility: People with vision problems likely have some other thing to make it high contrast.