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Numix Flat
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January 7
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74.7 KB


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Creative Commons License
Some rights reserved. This work is licensed under a
Creative Commons Attribution-Noncommercial 3.0 License.
Numix Flat Dark - GTK 3 theme by me4oslav Numix Flat Dark - GTK 3 theme by me4oslav
Numix Flat Dark is the completely flat and dark version of the Numix Theme. It is a modern flat and dark theme. It supports Gnome, Unity, XFCE and Openbox.

Numix Flat Dark is a part of the Numix Project.

Available on Ubuntu Software Centre

Ubuntu users will be able to install the theme from the from Ubuntu Software Centre once it is reviewed there. We have submitted it for review already.

Manual installation

Extract the zip file to the themes directory i.e. /usr/share/themes/

To set the theme in Gnome, run the following commands in Terminal,

gsettings set org.gnome.desktop.interface gtk-theme "Numix Flat Dark"
gsettings set org.gnome.desktop.wm.preferences theme "Numix Flat Dark"

To set the theme in Xfce, run the following commands in Terminal,

xfconf-query -c xsettings -p /Net/ThemeName -s "Numix Flat Dark"
xfconf-query -c xfwm4 -p /general/theme -s "Numix Flat Dark"


GTK+ 3.4 or above

Extra Goodies

For official Numix artwork please visit this.
For additional Numix artwork - this.
User style for Chrome -

Known issues

To fix the small font issue in LibreOffice Calc sheet tabs, create a file .gtkrc-libreoffice in your home folder with the following content,

style "libreoffice-scrollbar" {
GtkScrollbar::trough-border = 3

widget_class "*" style "libreoffice-scrollbar"

Then launch libreoffice with the following command,

GTK2_RC_FILES=$HOME/.gtkrc-libreoffice libreoffice


License: Numix license.
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L0kust Featured By Owner Jun 8, 2014  Hobbyist Digital Artist
Thanks. this really  is the best theme for Linux IMO... Justice for all, FTW! 
SteamShark Featured By Owner May 3, 2014  Hobbyist General Artist
Great theme! I bought it last month through the Ubuntu Software Center and have been using it ever since. A couple of things, though.
1. The theme has rendered the Ubuntu Software Center to near-uselessness. The fonts blend completely in with the background and I can't read anything.
2. Some website search bars such as in YouTube aren't a big fan of the theme either. Searching for a video either in the search bar or on someone's channel renders the text either difficult to read or literally impossible to see without highlighting it. <-- to show what the channel search bar looks like initially.
(P.S. Don't panic about the green, I use a theme config to modify the highlight color. This problem existed before I did that though.)

Can you think of any way to fix these or release an update to do so? I would love to be able to use this theme to its fullest extent.
satya164 Featured By Owner May 4, 2014  Hobbyist General Artist
USC uses custom CSS which cannot be overridden by the theme. The case is same with all dark themes. So nothing can be done :(

Also, same about firefox. Chrome doesn't have such issues.
SteamShark Featured By Owner May 4, 2014  Hobbyist General Artist
Maybe include the instructions I posted into a readme or into the description of the theme? I'm sure it could help a lot of people out!
SteamShark Featured By Owner May 3, 2014  Hobbyist General Artist
Update: I went ahead and fixed the Ubuntu Software Center problem myself. This wasn't a fault on your part, this is an inherent flaw with USC in general that affects other dark themes as well. I ran

gksudo gedit /usr/share/software-center/ui/gtk3/css/softwarecenter.css

and changed the first two lines from

@define-color light-aubergine #DED7DB;
@define-color super-light-aubergine #F4F1F3;


@define-color light-aubergine #DED7DB;
@define-color super-light-aubergine #F4F1F3;

@define-color light-aubergine #333333;
@define-color super-light-aubergine #333333;

which made the USC much, much easier to use. It even went and themed everything else correctly!

Also, I probably should have mentioned that the problems I was having browser-wise was using Firefox, and sure enough, the problem I had affects other dark themes as well! To fix that, I used the guide posted here: <- Link to
I would recommend changing the background line of code given from #aaaaaa to #eeeeee or even #ffffff, since that grey clashes a bit too much for my liking, and remember if you're editing with gedit to switch to plain text before saving by clicking on the little button that says CSS. Plain text is near the top.

Again, thank you for the theme, and I hope this helps others!
eudennis Featured By Owner Feb 25, 2014
I just found that Firefox theme has a ugly gradient on Firefox selected tab, but I didn't found the ff.css file inside the theme folder.
beta992 Featured By Owner Jun 24, 2014
Install FXOpera! (At devs, you should add this to your description! :P)
satya164 Featured By Owner Mar 4, 2014  Hobbyist General Artist
Firefox is not native gtk, so cannot do anything. And it's not even gtk3 yet, so no CSS.
eudennis Featured By Owner Mar 6, 2014
I know that is not native GTK, but already saw a lot of themes that have "ff.css" to make some changes.
satya164 Featured By Owner Mar 6, 2014  Hobbyist General Artist
Hmm... Might be for the GTK3 version of firefox which is not released yet. Or may be some other app. Who knows!
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