I feel like they may have printed that design on with rubber or screenprinted rubber, similarly to just about every other costume MARVEL puts out. Ant-Man's first suit has a square pattern that is printed, Spider-Man has bricks. Black Panther has at least 4 different printed designs.
I'll probably just use a red Puff Paint mixed with different Matte Angules Direct paints to color match it. Then attempt to "burn" the paint with a heat gun to make it more Matte.
The website looks a little shady, but it's legit. I use them whenever I run out. lol
http://www.dharmatrading.com/paints/angelus-leather-paint.html
Their colors are also VERY close to their swatch pallet.