This is just a simple modification of a Karamba theme package called "Simple Widgets" (http://www.kde-look.org/content/show.php?content=29298). I added the graph, and changed the font to "District, Thin" (which you can find at this site free for downloading (beer, not speech; the font's not GPL): http://www.philsfonts.com/freefont.html). If you do not like the font, or do not agree to Phil's Fonts EULA, you can simple change the .theme file to use any font you wish. Please leave a comment if you find this useful, or have any ideas on improving it! The file includes both SimpleGraph (clock + graph) and SimpleGraph-NoTime (graph only).