I do dislike the movie's heavy use of pastels, but I don't think changing the uniforms would improve my opinion of the movie much. The movie's real problems -- pace and story -- would remain the same.
Agreed. But, even in that case, the only real problem is the final hour where they take that 6,000 year ride through VGER, and there's nothing but reaction shots of the crew. Cut that down to say, two minutes or so, and the rest of the movie is fine.
I admit the jammies the crew wore in the movie were stupid, but it was the least of the film's problems.