As reported by Lars Vogel in "New Eclipse 4 Chrome Theme – Eclipse 4 get even more beautiful":
Checkout https://github.com/jeeeyul/eclipse-themes/ for a new Chrome theme. The update side is listed below and the main website describes the setup and the available customization.
So it is a first example of complete (ie "not just editor colors") customization of Eclipse (in addition of existing dark themes)

Michael proposes the following instructions:
In Eclipse click on Help / Install New Software then add the following update site to download the theme: https://raw.github.com/jeeeyul/eclipse-themes/master/net.jeeeyul.eclipse.themes.updatesite/ (taken from this page).
Then check Jeeeyul's themes to install it.
After installation you can click on Window / Preferences / General / Appearance, then select Jeeeyul's themes - Chrome Theme and customize it in ... / Chrome Theme register.
Enjoy the awesome theme :)