kapusta: Good question!…..
But It really boils down to If one dresses with a black hat etc.. as you say,
does he/she have to dress down if hes in a outta town community
to not be Poiresh Min Hatzibur?
The answer is No. This is mentioned right away in Shulchan Aruch/Mishna Berurah,
“Vloy Yisbayesh Mipnei Bnei Adam Hamaligim Olov Bavoidas Hashem”
for when it comes to Ruchnius If one is on a certain level
& dresses a certain way with Ehrlichkeit he should not
be discouraged by what ppl think.
Secondly the outta towners know there are ppl who dress this way
its not like he tailored himself a neon green Beketcha!
Thirdly there is a klal Maalim Bakoidesh,
Which translates to, in things that are Holy we go up, not down.
I heard once heard a story that a chassid who wore a Shtreimel
became a Chabbad Chossid & wanted to start wearing a benddown hat
to fit in there. & the Lubavitcher Rebbe Z”L Said he should continue
wearing the Shtreimel Altz, “Maalim Bakoidesh”
(I can’t confirm if the story is true)
However I was trying to bring out a point.