Thread:Shadowunleashed13/@comment-27422022-20150202234754/@comment-5215338-20150203002654

By "title, do you mean this picture? If so, then just check the theme designer section (Special:ThemeDesigner) on the admin dashboard (Special:Admin) on your wiki. There, you have the option to upload a custom file to go in that area. However, you've got to be precise: the image has to be within certain dimensions and a certain amount of memory.