I have been rewatching TNG over the past several weeks and I have finished the 5th season and notice that Picard got some sort of jacket this season and stopped wearing his normal uniform for quite a lot of episodes. The previous seasons seemed a little more anal in the military part of Starfleet and this just seems to jump out this season, I was wondering did Stewart ask to wear something different ? and I can't remember him wearing the same thing in later seasons though might be wrong there ? I defintly know other captians didn't in the other shows.