I really like the human-theme for GTK apps but the tabs are a butt-ugly brown :(

[vbgunz]

I really really like this theme over QtCurve and while it respects most of KDEs colors, the tabs are the only thing screwing everything up These tabs are a butt-ugly brown/orange and I am lost for how I can tweak this though I feel 100% that I can. Can I please get some tips?