1.

Materia-Light-Compact-Turquoise GTK+3 Theme/Icon Remix 1.3

GTK3 Themes by yamon
This is a recolored (Turquoise) version of the Materia-Light-Compact GTK3 theme. It supports GTK+ 3, GTK+ 2, GNOME Shell, Mate, and Budgie desktop. Also included is a remix of Sardi-Flat and Suru++-Telinkrin iconsets. The icons match the turquoise-colored theme nicely.
Arch (tar.gz)
Score 50%
50 Likes
50 Dislikes
2 hours ago
2.

Shades-of-gray-theme

GTK3 Themes by WernerFP
A flat dark GTK-theme with ergonomic contrasts. It supports Gnome, Xfce4, Mate and Openbox. Theme customizations for Firefox, Thunderbird and Inkscape are additionally included. Shades-of-gray is available in seven color variants: • Gray • Arch • Cerulean • Firebrick • Harvest...
11 comments
Score 67%
67 Likes
33 Dislikes
6 hours ago
3.

Xfce Evolution 4.11.2

GTK3 Themes by gyll
The Xfce Evolution theme attempts to rid the Xfce desktop of visual distractions by providing a more consistent look (buttons, scrollbars, menus, etc) across older and newer applications. If you like this theme please rate it so that other people can find it more easily. ------- Based on...
132 comments
Score 80%
80 Likes
20 Dislikes
10 hours ago
4.

Cabinet 1.0

GTK3 Themes by g-nome
GTK 3 and GTK 2 Themes Base On Arc-Theme (https://github.com/horst3180/arc-theme) Running well on Debian 9 (Stretch), Ubuntu 18.04, Linux Mit 19 with GTK+ 3.22 Please Read the readme.md file for themes Installation.
Score 50%
50 Likes
50 Dislikes
21 hours ago
5.

Ultimate Dark 3.28

GTK3 Themes by bolimage
Dark version of Ultimate Maia GTK Theme. Link to colored folders Icon Themes : https://www.opendesktop.org/p/1218961/
Source-Code
25 comments
Score 71%
71 Likes
29 Dislikes
21 hours ago
6.

Ant Themes 1.1.0

GTK3 Themes by eliverlara
A flat and light theme with a modern lookInstallation: 1.- Extract the zip file to the themes directory i.e. ~/.themes/ or /usr/share/themes/ (create it if necessary). 2.- To set the theme in Gnome, run the following commands in Terminal (i.e Ant theme). gsettings set...
241 comments
Score 74%
74 Likes
26 Dislikes
1 day ago
7.

365color 0.2

GTK3 Themes by facecolor
365 themes for gtk
2 comments
Score 57%
57 Likes
43 Dislikes
2 days ago
8.

Macterial 1.0.1

GTK3 Themes by mythio
A mac inspired GTK+ theme based on Material design How to use? Create a folder named '.themes' in your home directory mkdir /home/user_name/.themes Download the '.zip' file and extract it to the '.themes' directory Install gnome-tweak-tool sudo apt install gnome-tweak-tool Run gnome-tweak-tools...
Source-Code
17 comments
Score 71%
71 Likes
29 Dislikes
2 days ago
9.

Marwaita 3.4.2

GTK3 Themes by darkomarko42
Theme for Budgie Desktop (also support gnome-shell, cinnamon and xfce) gtk3.22 3.4.2 new progressbar fix headerbar combobox fix tabs in gtk2 add new buttons style to gtk2 fix disabled text in menus (DM) new xfwm theme to match with gtk3
36 comments
Score 74%
74 Likes
26 Dislikes
Jul 18 2018
10.

Plastik 1

GTK3 Themes by Noob
Simple Theme
18 comments
Score 68%
68 Likes
32 Dislikes
Jul 18 2018