nfgo3, of course not. I am sephardic and i am actually looking for chasidish style white or grey rekel for shabbat because Al PI Rabbenu Ha’Ari ZL’s shita you should not wear black on shabbat rather you should wear white (because of the Ari zl’s shita Ben Ish Hai says also the same).
I am not an expert on chassidish clothing, so this is only from what I see around, Chassidish clothing is not monolithic however most wear black not what although Toldos Aharon wears another color (Not sure of Toldos Aharon is considered Chassidish or not) and also the Rebbes of differnt groups sometimes wear a different color