I want to use CSS to change the watermark (logo) that appears in the top left part of the editor, just next to the page title, as it's made to appear seamlessly against the background color of pages, but not against the color of the editor. Now, Wikia's terms of use forbid intentionally making changes that modify the user interface or it's normal functionality. While I'm positive I can do this kind of change, could someone please say if I'm correct?