When I dip-bleached my Zara jeans, HERE and HERE, I also took some time to bleach a few other items. One was this Alternative Apparel black t-shirt. Since black shirts are made from other very dark colored dyes, when bleached, they generally turn some shade of red or rust. This is the same reason why so many blacks don't match well, they are based with different colors of super dark dyes. I love the effect it had on this AA shirt. The rust is exactly the acid wash-y feeling I was hoping for.