12.04 wholly dark Ambiance theme?

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http://askubuntu.com – I got my first partition of Ubuntu recently, and wanted to match it to a 10 or 11 interface I was using on another computer. It looked like this: http://lh6.ggpht.com/_1QSDkzYY2vc/TGpkWVfmvHI/AAAAAAAABso/afo6VrpWUu4/am... Themes in 12.04 seem to be rather tricky though! I've delved into usr/share/themes and ~/.Themes countless times with gtk-2 and gtk-3 trying to get things working, using Appearance and Advanced Settings (from a "tweak" somethingorother). Nothing has worked though, and the themes I've found so far are ugly to boot. All I'm looking for is straight up (HowTos)