There are some very classy high end aluminum full tower cases with very clean lines in classic black. Here is an example:http://www.mountainmods.com/pinnacle-24-cyo-p-498.html
NOTE - You get to specify whether you want solid black panels or optional panels. Check the drop down options menus. Scroll down further and look at the additional images. You can also order additional hard drive cages. Hope you have a small fortune in the bank.