Usually what I do is use Stylish (Firefox extension) to correct any funky CSS mishaps. I’ll do the same for this site if I find myself needing to write more comments.

For example, on many websites, w3c’s CSS validator will complain a lot about the following when the warnings option is set to ‘all’:
“You have no background-color set (or background-color is set to transparent) but you have set a color.”
At the time I started learning CSS, triggering this warning didn’t require raising the warning level of the validator. It was on by default. I thought it was one of the dumbest warnings. But now that I use a dark theme, I know better.

My theme colors input boxes with a dark background, and bright text. The website only overrides the text color and I get dark on dark. It’s really annoying.

Finding a good dark theme is a challenge anyways. I’m not a big fan of Ubuntu Studio’s theme, but I found another beautiful theme that has not shown too many issues yet. It’s Elegant Mine:
http://www.gnome-look.org/content/show.php/Elegant+Mine?content=77491

I do hope posts like this get people more interested, and that we eventually get increasingly better dark theme support everywhere.