Ubuntu Studio artwork question

[Brian Edward Shaw]

    First off I sincerely apologize for bugging all the Ubuntu Studio 
devs with such a trivial question, I could not seem to find a way to 
contact just one person in relation to Ubuntu Studio nor did I find any 
sort of Studio specific forum to post my question. I am simply wondering 
what the license is on the main Ubuntu Studio icon. I searched for the 
icon on the web and downloaded two seemingly different versions and have 
used them to create my own menu-icons.(the icon shown on the menu in the 
upper left-hand corner) I would really like to share these on the 
gnome-look site for others to enjoy but am unsure if it was even legal 
for me to have edited them in the first place. I attached my creations 
for you to have a look, please if someone could inform me as to whether 
it is ok for me to upload these to gnome-look that would be great! Also 
feel free to use them yourselves if you like them or find any use for them.

    Thank you,

    Brian Shaw(Perturbed Penguin)

-------------- next part --------------
A non-text attachment was scrubbed...
Name: UbuntuStudio-13d-menu1(BrianShaw).png
Type: image/png
Size: 1537 bytes
Desc: not available
Url : https://lists.ubuntu.com/archives/ubuntu-studio-devel/attachments/20100111/856e5a6b/attachment-0004.png 
-------------- next part --------------
A non-text attachment was scrubbed...
Name: UbuntuStudio-13d-menu(BrianShaw).png
Type: image/png
Size: 1193 bytes
Desc: not available
Url : https://lists.ubuntu.com/archives/ubuntu-studio-devel/attachments/20100111/856e5a6b/attachment-0005.png 
-------------- next part --------------
A non-text attachment was scrubbed...
Name: UbuntuStudio-menu1(resized).png
Type: image/png
Size: 1817 bytes
Desc: not available
Url : https://lists.ubuntu.com/archives/ubuntu-studio-devel/attachments/20100111/856e5a6b/attachment-0006.png 
-------------- next part --------------
A non-text attachment was scrubbed...
Name: UbuntuStudio-menu(resized).png
Type: image/png
Size: 1461 bytes
Desc: not available
Url : https://lists.ubuntu.com/archives/ubuntu-studio-devel/attachments/20100111/856e5a6b/attachment-0007.png