There is a very good dark mockup at:
[[http://willwill100.deviantart.com/art/Interpid-Ibex-Mockup-Part-2-93584910]]

{{http://fc01.deviantart.com/fs31/i/2008/215/0/b/Interpid_Ibex_Mockup_Part_2_by_willwill100.png}}

I don't like the dock or widgets, but the color scheme is a step in the right direction.