Wasp is theme that would fit perfect in Ubuntu 10.04.
I have been using this theme since Ubuntu 9.04

Wasp is a suite of GTK, Metacity, Xfwm and GDM themes. It includes:
- Wasp (GTK, Metacity, Xfwm)
- Wasp-Alt (GTK, Metacity, Xfwm)
- Wasp-Hard (GTK, Metacity, Xfwm)
- OpenOffice.org patch
- Stylish addon for Firefox
- Wasp for GDM
Wasp is the first theme (as far as i know) that has a script to take care of OpenOffice.org apps.
Wasp takes care of most used apps with adhoc configurations: no strange behaviour like dark toolbar where it shouldn't be, no redundant borders, no compromise on general setting just because of a strange behaviour in one app.
Wasp is not dark and is not light: dark is beauty where it can be applied, so Wasp is dark where it is beauty.
Don't like orange/brown colors? just use GNOME Appearance and choose all colors you want, Wasp is totally recolorable.
In Wasp-Alt theme i put all configurations that i don't like but most people wants, or configurations that make less troubles and are more compatible. For now, Wasp-Alt differ for scrollbars, Nautilus and Gnome Terminal configurations.
Wasp-Hard is a darker version of Wasp, it is suited for everyone and in particular for globalmenu users.
- Copy Wasp, Wasp-Alt and Wasp-Hard directory to /usr/share/themes/ or /home/$USER/.themes/.
- Open a terminal, cd to Scripts directory and run ooo.sh. Running this script is required for OpenOffice.org applications to work correctly.
- Open your browser, go to https://addons.mozilla.org/it/firefox/addon/2108.
- Install the Stylish addon for Firefox, go to http://userstyles.org/styles/17607.
- Install the Wasp style for Stylish addon.
If you want to restore OpenOffice.org settings just re-run the ooo.sh script.
Download Wasp ThemeDownload Wasp GDM Theme