Board Thread:Support Requests - Designing Your Wiki/@comment-32129972-20130101181505/@comment-4139585-20130101182100

That link automatically appears if the page is a subpage of any page. For example, in your screenshot, the page User:Penguin-Pal/1 is a subpage of the page User:Penguin-Pal, so a link to the "parent page" appears like that below it. It follows the same color scheme as the color of links set in Special:ThemeDesigner. I'm not sure of anyway to change the color without changing the color of all links.