bulwarks for Yuri "Agus" Slatanov can mix and match their colors as part of becoming a full blown bulwark, but the ones listed here are the most common paint patterns see OG project more more info on bulwark marines this chapter is called the frost-bearers after their genetic mutation of being nigh immune to temperature fluctuation and with older Marines gaining frosty skin and near 0 body temperature. they also inherited the purple blood sometimes called kelps after their common ration being kelp. since on their ice ball home world being full of kelp growing beneath the surface of the ice, along with spiny but hearty furry fish.