Look and Feels
http://learn.adobe.com/wiki/display/Flex/Get+oriented+to+Flex - of course Adobe always does a good job, not liquid though.
http://www.appistry.com/community/wiki/display/cloudiq43/About+the+Platform - like some of the things they did here.
http://confluence.atlassian.com/display/DISC/Powered+By+Confluence - listing from their site
Changing Footer
http://confluence.atlassian.com/display/DOC/Editing+the+Footer - explains how to modify the property files inside of a jar file.
Instead, I just keep it simple, edit footer-content.vm and comment the first instance of,
$action.getText('licensefooter.community',[$action.getText('url.atlassian'), $action.getText('hitcounter.community'), $license.organisation])<br>
using #* text *#
#*$action.getText('licensefooter.community',[$action.getText('url.atlassian'), $action.getText('hitcounter.community'), $license.organisation])*#<br>