Conversation so far:
When did Manchus start wearing red tassel hats?
Manchu people wear hats in all ages and seasons in contrast to the Han Chinese culture.
What other pieces of clothing besides hats make up their traditional garments?
To facilitate convenience during archery, the robe is the most common article of clothing for the Manchu people.
Are there additional clothing pieces involved with the Manchu robe?
Over the robe, a surcoat is usually worn, derived from the military uniform of Eight Banners army.

Question: What are the main colors of their clothing?
Self-contained rewrite: What are the main colors of Manchu clothing?