After porting deKorator to KDE 4 I thought that it could need some improvements. There are currently two issues that I (any many other users) find irritating.
The first issue is theme selection. After you selected a theme from the list, you need to click “Apply Theme Paths” to apply the paths to the Paths tab page. This seems intuitive in the light that the engine only sees these paths, but I guess most users do not want to create a theme, but just select it from the list.
The other issue is colorization. There are many check boxes and options that affect colors of the theme and buttons, and one can only guess how they all play together.
Well, none of the above issues are addressed yet, but I started hacking on a new theme selector, which has in-list previews and offers a “Get New Themes…” download button to invoke the standard GHNS dialog.
You can find deKorator in KDE svn trunk, path is playground/artwork/dekorator.