The body text is approximately legible size, but low contrast.

The code examples are all but unreadable.

http://i.imgur.com/ogS9yat.png

Here's a quick improvement for legibility. I'm not claiming a thing of beauty.

http://i.imgur.com/mW880fB.png

My general style guidelines are included here:

https://news.ycombinator.com/item?id=6996064#up_6998399

I see your point about the larger fonts but I have used the sunburn theme for a while in my editor (not anymore thought in favor of slightly customized naquadah[1] ) and I feel quite a bit more comfortable reading code in familiar coloring. I chose this color scheme because sunburn dark is quite popular.

[1] http://rvfblog.wordpress.com/2011/03/07/using-naquadah-theme...

I still find it very difficult to read. Even expanding the font size isn't sufficient.

That's a pity.

Perhaps your color vision is now at the point where you should consider loading an accessibility stylesheet into your browser. I don't look forward to the day when I am required to do this, but I do know that it will inevitably arrive.

I use Stylebot to modify sites' CSS.

1188 stylesheets and counting.

Huh, this is what I see: https://i.imgur.com/fcNfpM3.png

It seems that some of the stylesheets are broken for HTTPS. Note that this is not https-everywhere breaking the site; simply switch the URL to https://, and you will see what I see.