Hi Moshen,<br><br>For information on getting involved, see <a href="https://wiki.ubuntu.com/Artwork/Documentation/GetInvolved">https://wiki.ubuntu.com/Artwork/Documentation/GetInvolved</a> . If you want to submit a theme, please read 
<a href="https://wiki.ubuntu.com/Artwork/Incoming/SubmissionGuidelines">https://wiki.ubuntu.com/Artwork/Incoming/SubmissionGuidelines</a> .<br><br>Gabriel<br>