most skins that are black can have the colored elements hue adjusted in the WB config settings window.. open the WB config window and in the "change how my windows look" section select the skin you like. in the preview window you will see.
Install from disk
Edit in skin studio
Change skin color.( click on this one)a small color changer window will appear.
check Enable custom color support box, and the "Use HSL Based coloring" box.
Now you can use the hue and saturation sliders to adjust the colors to what you like...
when done click the "apply changes" button and wala ur newly recolored WB is applied..
have fun theres tons of dark skins to choose from and recolor to your liking