Gradient black has been designed on a xfce desktop. It supports its panel, gtk2,gtk3 and all apps provided. It is the antithesis of a "material" design: it contains gradients wherever possible ;-)Besides XFCE the theme has been tested on LXDE, gnome, Cinnamon.

dark and light gtk themesicons : https://github.com/NillyTheL0L/marvish-themes/blob/main/marvish-icons.tar.xz?raw=truegithub: https://github.com/nillythel0l

GTK 3 Theme for the colorscheme Rosé PineLoosely based off of Ant GTKFuture plans: Hover buttons with Rose design Make GNOME top bar more consistentFetch featured is my own fetch script CalcFetch

This is a pitch-black theme for those inclined to the very darkest. Built for Gnome 3, it should work with any GTK theme support.

completely adwaita theme just add solaris title button in it.

A mac inspired GTK+ theme based on Material designHow to use?Create a folder named '.themes' in your home directorymkdir /home/user_name/.themesDownload the '.zip' file and extract it to the '.themes' directoryInstall gnome-tweak-toolsudo apt install gnome-tweak-toolRun gnome-tweak-tools and...

This is a pitch black, flat, dark theme based on Materia.

This is a cyan/black/blue/grey dark flat Materia theme for GTK 2 and 3, Gnome Shell, XCFE, i3, any window manager that accepts GTK Themes.

This is like the black-light posters you had in the 70's but on your Laptop or PC. Any GTK 3.0 or 2.0 should work as well as XFCE and i3.

Numix Frost Gtk theme made by the Numix team specifically for Antergos