The Question and Answer section for 1984 is a great resource to ask questions, find answers, and discuss the novel.
I believe this is a history question. Sorry, we only do literature related questions on this forum.
Everyone in the Party wore the same unform. Their uniform was blue overalls.
He moved over to the window: a smallish, frail *gure, the meagreness of his body merely emphasized by the blue overalls which were the uniform of the party.