I made them for Pastie clipboard manager, they are similar to http://gnome-
look.org/content/show.php?content=150033. In order to use them for Pastie, choose the proper one for the color theme you use (Ambiance or Radiance). Rename it to pastie.svg (sic!) and place into ~/.pastie/ folder (create it).
If you like to use it with Parcellite or some other clipboard manager, some insight can be found here: http://ubuntuforums.org/showthread.php?t=1867626. Or use web search to find the location of the icons of your favourite clipboard manager.