I don't think that's what his main potin is or maybe I'm misunderstanding.
He's wearing pretty much the same outfit in all the films... and exclusind here, the stripe is red...
As for "mickey mousing," I've never studied composition, this is simlpy though my own studies... I kinda perfer Looney Tunes than Mickey Mouse. Mickey Mouse cartoons didn't use music, especially classical and jazz pieces like those by Williams fathers conductor, Raymond Scott, like Looney Tunes did heh....