Okay, done a job in color correcting the tapestry to another photo taken at the same place, same time.
The black suit is obviously closer to the right color. Elvis face looks normal. Maybe that photo is a tad too dark, since the suits weren't that pitch black.
Also taken in the light of the backstage footage and Elvis walking through the hallway in This is Elvis wearing this suit really makes me think this used to be a blue suit.
Also in one of the GRaceland guide books if you look at the lining in the left sleeve you can see it has a blue lining.
If the suit is purple then so is Elvis haircolor. It is a well known fact that dying hair black gives rise to a blueish color in lighting.
