gnome-appearance-properties-extra ...???

GtkSettings/XSettings:

• gtk-alternative-button-order
• gtk-button-images
• gtk-enable-accels
• gtk-enable-mnemonics
• gtk-icon-sizes
• gtk-menu-images
• gtk-toolbar-icon-size
• gtk-toolbar-style

Colors:

• App specific colours for panel, nautilus, metacity

Style properties

• xthickness/ythickness
• more...