This is all explained and described on the wiki under the Kubuntu Artwork Philosophy section: https://wiki.ubuntu.com/Artwork/Documentation/KubuntuPhilosophy
Bear in mind that this is a work in progress, and changes will continue to happen. It states that O2 is indeed a working name and not the finished article. It may be a bit early to file wishlist bugs on the artwork for the upcoming release. It would be better to discuss these matters on the ubuntu-art mailing list. ** Changed in: kubuntu-default-settings (Ubuntu) Status: Unconfirmed => Rejected -- the default kubuntu colour scheme has a non obvious name https://launchpad.net/bugs/57426 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs