Don't think that has anything to do with UI...

What I thought this thread would be about based on the title was allowing is to select UI backgrounds like in nearly every other FF title. You could do this in XI choosing a color scheme or pattern for the UI. This would be a great opportunity for a mod in the future as well /winkwink!

P.S. give us sound schemes too! I want a chocobo sound scheme for my client. Various warks/kwehs and all that. Make it so SE.