Indigo means that the wall tab doesn't work.
As shown in the URL of this page, instead of reading the user as Trust%20&%20Betrayal as it should, it reads it as Trust+%26+Betrayal. From my knowledge %26 is widely used in URLs to represent "&" similar to how "!" is represented with %21 (or something like that) unless in a query or something along them lines. I think the problem is that the HTML reads the link to display & first but after that it decodes it into %26 which reads as a new user that doesn't exist. Or at least I think thats what happens. I go to school to learn Math, English and Science not this shizzle so don't blame me if I'm wrong.