Here's a light-on-dark theme userstyle for the recent dlang.org
The front page looks like this:
The theme supports the front page, articles, language
specification, Phobos documentation and the forums. Other
subdomains, like code.dlang.org, issues.dlang.org and
wiki.dlang.org are unaffected.
The userstyle document is compatible with Stylish/Firefox. I
might put it on the Stylish repository in the future for easier
Suggestions, forks, uploads to Stylish and so forth are all
welcome. The important part is that we have an alternative that
is nice on the eyes for us who use dark-coloured UIs.