Thanks Krasnol :)

This is an interesting issue. What color is your "topbar" configured to? You can check it under your profile settings: https://news.ycombinator.com/user?id=Krasnol. It could be that the topcolor that you've set is a dark color, and the CSS inversion makes it light, thus conflicting with the text color.

If this is still a problem, please do open an issue on the GitHub repository, I'll happily look into it :)