this is what it looks like:

(Click for larger image)
the only problem is that in the history it uses the same icon for multiple stuff (ready icon, and newzbin informational url icon) so it's kinda ugly but you'll only see it if you have newzbin bookmark syncing enabled.
hope you guys like it

download here:
http://files.jamiemarciano.me/plushmod/plushmod.zip
Installation: (For mac users)
Right-click SABnzbd+.app and select "Show package contents", then go to: /Contents/Resources/interfaces/Plush/templates/static/images/plush-default/
and drop the files in there. Make sure to backup the old ones if you ever want to go back.
For windows users i dont know, but i guess it goes in the same folder somewhere on your disk.