Install the addon via uploading the /library/ folder
Install the .xml file via the addon system.
It will create two templates and a property style menu. It does not affect the default XF footer in any other way.
I have shifted the default XF colors, etc, out of the @property attributes to minimise issues with colouring, though you could put them back within them in the footer_custom.css template and control them uniquely from the new style property tab created.
It uses the hook system, so you can turn it on / off per style.
Choose upgrade from the previous version and upload the .xml over the prior version.
V3 - Fixed bug with links inheriting default footer block styling. V2 - Added option to enable / disable per style back into footer_custom template. V1 - Upgraded manual template installation to hook system.
This will install on any XF version where the footer template contains the "footer" hook.