Install the "Eclipse 4 Chrome Theme" from http://marketplace.eclipse.org/content/eclipse-4-chrome-theme
You can then customize many of the Eclipse UI widgets. But not what you want, at least not out of the box. To do this, you must go to the CSS tab (in the Eclipse 4 Chrome Theme theme) and paste this:
Tree, List, Table { background-color: #202020; color: #d0d0d0; }
You can change almost everything, the problem is what happens, and that some things are bitmaps that you cannot change (therefore, if the bitmap is dark and you set a dark background, you will βloseβ the bitmap )
This list of widgets may help, http://download.eclipse.org/rt/rap/doc/1.5/help/html/reference/theming/index.html , but they give you general information about widget names, not Eclipse information (with identifiers and all), so be careful :-)
== A very late addition ==
Everything you need in one place, including links to a custom dark theme: http://mihai-nita.net/2013/09/19/dark-eclipse/
Mac Screen Shot since September 2013 (be sure to restart Eclipse after changing the file):

Mihai Nita Jan 18 '13 at 10:59 2013-01-18 10:59
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