I’m not sure why there was much change on the dress side since WWII. The uniforms that Eisenhower and Patton wore were fine. If anything, I would have kept the kahki’s and dropped the greens. Our uniforms will look a lot like those of a company that provides trash removal for many Boston institutions: Gray shirt and blue pants. Amazing.
The change in Army uniforms was an early example of political correctess. The uniform worn during World War II was actually quite different between officers and the other ranks (enlisted). Officers wore “pinks and greens”, a dark olive jacket and taupe trousers. Enlisted soldiers wore a ligher shade of olive for both blouse (jacket) and trousers that was more simply tailored and made of courser material. The Army Green uniform was introduced in 1955 to make the Army more “democratic”, reducing the differences between officer and enlisted uniforms. The basic green uniform was the same, with the addition of black braid on the cuffs and the trouser legs as the only distinction between officer and enlisted uniforms.
I think that most would argue today that they would have done better just to put enlisted soldiers into pinks and greens and be done with it.