Here is a web page I found on the net, which are replacement Emblems for Ubuntu.

I found that if you go to "File" "Save Page As ..." and then in the dialog box
"proposal.html" (which should be the name displayed), save it, two thing are
saved.

1. the web page proposal.html is saved in the folder you download it to.
2. another fold named ( proposal_files ) is created with all the Emblem files
in ".png" format ready to use

Here is the web page
xsu.sourceforge.net/proposal.html#Icons_to_add

Any one of the emblems can be imported as follows:
1. Open Nautilus and under "Edit" choose "Backgrounds and Emblems"
2. Left side of dialog box third Icon down "Emblems" click on it
3. Of the four buttons accross the bottom of the dialog box choose
"Add a New Emblems"
Now things need to be done 1. Navigate to the emblems you want to use, and 2.
Name it, but not of name that all ready exist: error message will occur.