Yup, brocade is commonly used for Dynasty Warrior cosplays.
To me, it looks like her skirt is definitely gradient dyed. Starting from like a mint green at the top to a really deep green at the bottom.
Same with the green trim on her shoulder 'armor'.
Now that I look like it, a lot of the white brocade is gradient too, at least mostly the parts on her legs. White at top, a kinda muddy grey/brown at the bottom.