Blue Origin's Dress Code

Does anyone know why passengers on Jeff Bezos's Blue Origin Amazon rocket have to wear a blue uniform?  Why can't they just wear their own clothes?  I was just about to pay £235,000 for a trip into space but Bezos started telling me that I needed to wear some shit Spandex spacesuit.  "Fuck off, mate," I said.  "There's nothing wrong with a rugby top and jeans.  I'm not going into space looking like Jimmy Savile? Can we compromise on a business suit?". "No," he replied.  Honestly you don't see this on Star Trek ... So anyway I decided to stay home.  But it just goes to show Prime membership gets you nothing....