This is a little mash-up I did of various works from other artists (most notably lzfy, who did the background, which can be found here: http://www.kde-look.org/content/show.php/Lines?content=53167). Thanks to the all of the original artists for GPL'ing their work so that things like this are possible. (If you're one of the original artists and you want your name mentioned here, let me know - I unfortunately don't have a way of finding out who did each piece that went into this as I usually rename my theme files to keep them organized.)
If you have a lower-end graphics card, you might have to scale this down to something like 2048x512 for it to work.
You can get the matching cubecap seen in screenshot #1 here: http://www.beryl-themes.org/content/show.php?content=59414