While the Titanfall Xbox One never really came true (the custom one, not the bundle), you can still get a rather similar design for your system. I ran across this listing on eBay that has the custom Xbox One decals. I really doubt this would stay very long because I'm sure there has to be some sort of copyright infringement issue here. However, if you really want a decal for your Xbox One... you can get one! Here are images of the decal on a console that I came across on Reddit:
Nice, I was expecting this to be about avatars from the thread title though lol, my setup is predominately black, so ill just appreciate this without feeling the urge to find out where I can get the decal !