All up-to-date information can be found at github of Horst3180.

It is such a slick, beautiful and professional looking theme that it will be time well spend.

Resulting in something like this:

 

If you like this theme, then here are the steps you will have to take. I have tested it with the package from suse but even then you have to do the same steps to make it presentable in linux, google and firefox.

If you ever tried to install the vertex theme, Horst 3180 advises to uninstall it first by copy/pasting these 3 lines one by one in the terminal.

All the remnants are now purged from the system.

Download or git the vertex theme to your desktop. Third solution is using a ppa. That way of installing can be found at the bottom of  the page. Since it does nothing for your Firefox, Google Chrome or Plank. We will follow the steps on the website.

Once you tried git, you never go back.

Copy/paste this code in the terminal if you want to use git.

Go inside the folder vertex-theme and look around.

We are going to use the following script to run .autogen.sh.
But we will need some programs to be able to run it. So let us install them.

At the time of writing pkg-config was already up-to-date. However I did not use libgtk-3-dev the first time and got dashed lines around many objects which broke the theme. For examples look at troubleshooting at the end.

Now we can start the .autoconf.sh by typing

In /usr/share/themes we can now find the Vertex themes.

usr-share-themes-vertex

At this time we can select the themes already but there is still a lot of work to be found in the map EXTRA.
This is an example vertex-dark.

vertex-dark-with-fixed-lines

 

2. Google Chrome with Vertex-dark

On your desktop in the folder vertex-theme there is a folder with the name extra. We will need these files for the coming three adaptations.

Go and get vertex.crx in the Chrome folder and drop it anywhere on Google Chrome. Watch the bottom of the browser. It will ask if it can install this theme.

Continue or discard?

Evaluate your new look.

3. Firefox with Vertex-dark

On your desktop in the folder vertex-theme there is a folder with the name extra. Go and copy the folder inside the map named Firefox. I will go inside the folder Vertex-Dark and will copy the map CHROME.

Where should we paste it in?

That is a hidden folder. You will see it in your home when pressing CTRL + H.

vertex-dark-mozilla-firefox

 

Before:

vertex-dark-firefox

After REBOOTING:

vertex-dark-firefox-after

 

4. Plank theme for Vertex-Dark

Copy/paste the folder with the name Vertex-Plank in this map

You can now select this new looking design from the preferences of the plank. In your case it will not be “erik”…

 

5. Desktop theme from Vertex-Dark

There is also an desktop theme (i.e. menu and toolbar of cinnamon) that is quite black. Check here where it is.

vertex-dark-themes

 

Youtube Tutorial

 

 

 

FINAL RESULT

 

sardi-vertex-dark-final

 

Troubleshooting

Dashed lines

If you see this kind of look that will probably mean, you installed the theme without the package “libgtk-3-dev“. That is what I did. After contacting Horst3180 it was soon discovered this file was needed for the script to figure out what GTK version you use and provide then the correct version of the theme.

You can fix these dashed lines manually or you can reinstall the theme BUT this time after you installed …

Manual solution

Go to your File System and go to /usr/share/themes/Vertex-Dark/gtk-3.0

There is a file named gtk-contained.css.

Open it with sublime-text. Install it if you have to. More info can be found here.

Ctrl + F and search for the words “dashed“.

Change the line from

to

and save it. Since we are using sublime-text it will ask your administrator password in order to able to save it.

Now take a look at all the menu’s again. The dashed lines are gone. For some of items you need to change the themes and select vertex-dark again to see the effect of your efforts.

 

Not a git fan you can use a PPA

You can use the one of noobslab. At the date of wrting it was updated two days ago. So it seems to be maintained.