I have a completely different opinion. I think one would welcome new uniforms after wearing the same thing for a long time. New things in ones life is what helps stave off the blahs.Though Trek likes to pretend 24th Century society has evolved past this, people DO become accustomed to things. A uniform change is an upheaval in the lives of a crew who already have a LOT of shit to deal with mentally. They've been seeing each other mainly in the colourful uniforms for 6 years by that point - it's practically part of their identity.