Moose went with the Aether theme for the Spring Dance. Going with the thought that Aether and Outer space go nearly hand-in-hand. The Yellow Aura highlighting him in the piece represents he brightness of the stars in space.
The suit with the Trench Coat and the Space theme he went with give me 10th Doctor vibes. Only thing he's missing is the Converse. Love me some David Tennant.