The Oxygen Project is a project created to give a visual refresh to KDE Plasma Workspaces.
It consists of a set of computer icons, a window decoration for KWin, widget toolkit themes for GTK and Qt, two themes for Plasma Workspaces, and a TrueType font family.
The Oxygen theme set is used by default for Plasma Workspaces in most Linux distributions, like Fedora, Kubuntu, and openSUSE.
The original purpose was to create a new set of icons but expanded to include a new theme, which included a new cursor, widget and window theme, and sounds. It represents a break with the cartoonish look of previous K Desktop Environment 3 graphics and iconsets, adopting a more photo-realistic style. One of the overall goals of Oxygen was to provide a nice looking desktop that did not distract the user, so the icons and themes use a desaturated color palette. The name Oxygen came from a joke between the developers that they wanted to ”bring a breath of fresh air to the desktop”.
- Plasma theme is mostly black with white text.
- Use of gradient lines in the Plasma theme.
- KWin decoration features an emboss look.
- Vertical gradients and use of transparency in Plasma theme when using composite effects, blue tint without compositing.
- KWin decoration looks more 3-dimensional.
Plasma Desktop 4.3 with new Air
- A new bright Plasma theme, Air, becomes default.
- Usability work, like animations for the widget theme.
- New and reworked icons – mostly for toolbars.
- Window decoration no longer embossed.
- Monochrome icons for Air and Oxygen Plasma themes.
- The icon set gets reworked file type icons.
- Reworked folder icons.
Oxygen Fonts 
On December 21, 2011 The first release – version 0.1 – was done a month later. The 0.2 release from April 25, 2012 included refinements and added a monospace font.
the Oxygen Font sub-project was announced.
The Oxygen Project aims to offer standard icons, guidelines and a style guide. It builds on the freedesktop.org Standard Icon Naming Specification and Standard Icon Theme, allowing consistency across applications. There is an ongoing effort for supporting these specifications in different desktops, and by different icon sets and themes, such as the Tango Desktop Project.
See also 
- ^ "KDE Ships May Updates to Plasma Workspaces, Applications and Platform". KDE. May 7, 2013. Retrieved May 7, 2013.
- ^ "KDE Ships Third Release Candidate of Plasma Workspaces, Applications and Platform 4.10". KDE. 18 January 2013 .
- ^ https://fedoraproject.org/wiki/KDE
- ^ http://www.kubuntu.org/feature-tour
- ^ http://en.opensuse.org/Screenshots
- ^ http://pinheiro-kde.blogspot.com/2010/02/it-is-done.html
- ^ http://pinheiro-kde.blogspot.com/2010/01/very-small-post.html
- ^ http://pinheiro-kde.blogspot.com/2010/10/as-long-as-last-but-better.html
- ^ http://pinheiro-kde.blogspot.com/2011/08/desktop-sumit-or-paper-planes.html
- ^ a b https://projects.kde.org/news/137
- ^ http://code.newtypography.co.uk/?p=1906
- ^ http://code.newtypography.co.uk/?p=2057