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KDE 4.6 Oxygen Transparent screenshot

KDE 4.6 was supposed to ship with a transparent Oxygen style but in the end it didn't make it "due to serious issues (notably with embedded widgets, such as videos) which cannot be fixed at the style level". But that doesn't mean you can't install Oxygen-Transparent. Read on!

Do not confuse Oxygen Transparent with the window opacity - the window opacity (which you can tweak by right clicking the titlebar) makes everything transparent but using Oxygen Transparent, the widgets will still be visible while making everything else transparent!

Before proceeding, please note that even though this is an official branch, it is experimental so use it at your own risk! This will replace your current Oxygen with Oxygen Transparent. Further more, it will likely be erased by any future update of Oxygen by your distribution packages.

Install Oxygen Transparent in Ubuntu

The instructions below should work with KDE4.4 and above, however I've only tested it with KDE4.6 (in Ubuntu 10.10 Maverick Meerkat).

Oxygen transparent kde screenshots

1. Install the required dependencies:
sudo apt-get install build-essential cmake kdelibs5-dev kdebase-workspace-dev libxrender-dev libx11-dev subversion

2. Download the setup script from KDE Look and save it a folder called "oxygen-transparent" (save the file as "oxygen-setup.pl") in your home directory.

3. Run the following commands to start building Oxygen Transparent:
cd && cd oxygen-transparent
chmod +x oxygen-setup.pl

4. Once the script finishes downloading and compiling Oxygen Transparent, run the following command to install it:
cd build
sudo make install

5. Log out and log back it. To use Oxygen Transparent, you need to open System Settings and:
- go to Workspace Appearance and for "Window Decorations", select "Oxygen Transparent".
- go to Application Appearance and under Style, on the Applications tab, select "Oxygen Transparent" under "Widget style". To configure the transparency, click the Configure button next to Widget style and drag the Background Opacity slider to whatever value you like.

Revert the changes

Basically you could just set the opacity to 100% and everything should look like before using the script in this post. 

But if you want to completely revert all the changes, open a terminal and copy/paste the following command:
sudo apt-get install --reinstall kdelibs-bin kdelibs5-dev kdelibs5 kdelibs5-data kdelibs5-plugins kdebase-bin kdebase-data kdebase-runtime-data kdebase-workspace kdebase-workspace-bin kdebase-workspace-data kdebase-workspace-dev

Thanks to KoreSource.