>Currently, in the Western world, formal, proper clothing is either black-white or elements of blue or dark-brown.
>In today’s world, Observant Jewish men are less expressive with clothing than their female counterparts. I guess some people are not raised to be expressive in this area of life.
>Khasidim are more into the exterior. It could also be that the people that are Litvak/Litvish got their color trends from the Khasidim.