The color scheme there (on meta.scifi) pretty annoying, as if it was inverted. It is really not comfortable to look at it. Maybe change it to the main one, just greyed?
I'll second that. The scheme has other issues (I am too lazy to look for a link, but there was a Meta question about bold text being hard to distinguish).
It's not exactly Geocities "hurts my brain" type of bad, but I strongly prefered the regular dark on light themes (even BETA vanilla one). When I used Chrome, I used a custom add-on to change the site's CSS (also discussed here on Meta a while back), but that doesn't work on FireFox.