I've been enjoying my custom color theme The Grumbler for awhile, so thought I'd share it here. It's a dark theme that started as a Monokai look-alike, but has since morphed. No guarantee that it covers all languages, but the major ones should look all right (PHP, HTML, CSS, JS).
It was exported using PhpStorm EAP 5. It might also work in PhpStorm 4 (.WebIde40), so try it there if you'd like.
To use it, place it in the following folder (or equivalent) and restart PhpStorm: