I don't like low-contrast sites, but on my monitor that one is stark black-and-white. In fact there are no CSS rules for the color, and the font stack is "Inconsolata, Courier" so I don't know what the issue could be.
It's black and white on my MBP (Chrome). Maybe your browser is the one messing it up.
Re:Some news from LWN
by brazzledazzle on Thursday August 04, 2016 @01:21PM
(#12227068)
Not seeing what you're describing either.
This would probably fail a basic Universal Accessibility test based on that alone.