Extract the theme to ~/.kde/share/apps/desktoptheme/
Select the theme in System Settings>Workspace Appearance>Desktop Theme>Theme
Load the "SLAVE" colour scheme file into System Setting>Application Appearance>Colours>Import Scheme
If the theme doesn't show right for some reason, delete the cache file ~/.kde/cache (machinename)/plasma_theme_SLAVE.kcache
Licence: GPL
Notes
Text colour has to be white on some widgets because it cannot be changed from widget to widget. Text shadows are hard-coded so a compromise had to be made with the text colour and the theme being light/dark. Plasma theme limitations I'm afraid.
Toolbar Customisation
It's simple in KDE4, just right click the toolbar, select "Configure Toolbars". In the right side window you will be able to select your toolbar items, click "Change Icon" which will allow you to select any icon for the toolbar item.
Update - 1.1 - 15th July 2012
- Fixed movement in the viewitem for widgets like folder view. - Smaller scrollbar arrows. - A few changes to the colour scheme.
Update - 1.1.1 - 16th July 2012
- Reversed top panel gradient. - Top panel now renders properly, with shadow.