Adwaita Plus

Full Icon Themes
by Magog64

8.9
9   Apr 29 2019
+thanks
Nextwaita

GTK3/4 Themes
by paulxfce

8.7
9   Feb 11 2019
+
5.7
9   Nov 08 2018
+superb
Dark Glass Redux

Gnome Shell Themes
by pooch

5.7
9   Oct 23 2018
+Classic and Beautiful
Flat Remix GTK

GTK3/4 Themes
by daniruiz06

9.2
9   Oct 22 2018
+i voted - before because of the that disgusting ellipsoid buttons but after i tried/test the new i saw those ellip. buttons not appearing in me so i voted up again.(By the way as you mentioned below the darkness of the theme looks astounding,awesome you have good taste.But i think you should consider that ellipsoid buttons again,appearing only when clicked nice idea but for toggle buttons?)
La Capitaine

Full Icon Themes
by krourke

8.3
9   Oct 10 2018
+Super
Flat Remix ICON theme

Full Icon Themes
by daniruiz06

8.7
9   Sep 20 2018
+Cool
6.1
9   Feb 15 2017
UBUNTU TREE

Wallpapers Ubuntu
by tuxxx

4.7
3   Oct 22 2016
Apple Arc OSX Theme

GTK3/4 Themes
by umayanga

6.4
3   Oct 22 2016
Dark Wickerwork 1280x800

Wallpapers Ubuntu
by nechus

5.7
9   Oct 16 2016
Ubuntu Carbon Fiber

Wallpapers Ubuntu
by ubuntico1

5.7
9   Oct 15 2016
Ubuntu Metal Wallpaper 2

Wallpapers Ubuntu
by ozan2680

5.4
3   Oct 15 2016
ubuntu 3d

Wallpapers Ubuntu
by mi63l

4.7
3   Oct 11 2016
Ubuntu Wallper Nature

Wallpapers Ubuntu
by promix89

5.7
9   Oct 11 2016
Ubuntu Ghost

Wallpapers Ubuntu
by geistschatten

4.7
3   Oct 11 2016
ubuntu 3d desktop set

Wallpapers Ubuntu
by bergamasterz

5.3
3   Oct 11 2016
Ubuntu grey1

Wallpapers Ubuntu
by george758

4.4
3   Oct 11 2016
Ubuntu M.A.S.

Wallpapers Ubuntu
by MEinstein

4.7
3   Oct 11 2016
Ubuntu M.A.S. 1440x900

Wallpapers Ubuntu
by MEinstein

4.7
3   Oct 11 2016