OmNu-Champagne
OmNu-Champagne is a champagne colored GTK theme collection. It supports the Cinnamon, GNOME, Openbox and XFCE desktop environments.
GTK Themes
OmNu-Ice theme collection
OmNu-Ice is a cool, light blue/gray theme collection. Created in Themix (formerly known as Oomox), this is a Numix clone.
JGD-FallSunset
JGD-FallSunset is a dark GTK theme collection with an orange, brown and blue color scheme. It is based on JGD-SpringAwakening. Features include colorful buttons and certain backgrounds with subtle gradients. It supports GTK2, GTK3, Metacity and Openbox.
GoldBars
GoldBars is a collection of GTK based themes with gold coloring and 3-dimensional icons. It is a JGD-Black derivative. The package includes GTK2, GTK3, Metacity and Openbox themes.
JGD-CobaltBlue
JGD-CobaltBlue is based on the design for JGD-Black. It sports tints of the color Cobalt Blue (hex color #0020c2). GTK 3.20+, GTK 2, and Openbox themes are included with this package.
JGD-Black GTK+3
JGD-Black is a theme collection for GTK applications and Openbox. This collection will style your desktop with glass buttons, pure black top level menus, subtle gray shadows and borders.