APEX:

Apex is a lightweight dark style using only CSS backgrounds and minimal images for icons. Easily change the dominant blue color within the color palette to what you like.
Apex comes packed with options included in the parent style XenBase. Enjoy not having to install add-ons or do some of the most popular template edits. Makes changes simply by enabling the options you want, no extra overhead as great care was taken to make sure only the needed CSS or HTML is called properly.