Themes
Here there is a theme for your GNUstep Apps. Mainly this theme are for people that use desktops like Gnome, KDE, Xfce,... You can set the theme with SystemPreferences.app.
- Silver.theme Theme with silvered controls and scrollbars at right side.
- Rik theme - A Mac-like theme for GNUstep.
GNUstep SVN Themes
GnomeTheme (FIXME: 404) is a plugin to make a GNUstep theme based on the active Gnome theme. Is under development.
The GnomeTheme has recently been renamed Gtk.theme since it really is a Gtk theme. It is available in GNUstep's SVN repository under the plugins directory. Check it out here:
http://svn.gna.org/svn/gnustep/plugins/themes/Gtk
WinUXTheme is the theme for Windows. You can activate this on installation or with SystemPreferences.app.
Gap Themes
You find more at GAP.