This armor has a beauty of not only design, which I really love, but of (and this is going to sound bad when I don't mean it to be) dehumanizing them. Taking away the face, which is one of the identifiers a person has. Making them more machines of war as a group and team (to put a positive light on it). It both makes them special, seeming elite and at the same time seem mass produced each equally responsible than the other.
Apart from the thoughts triggered by the image, its another fantastic image. By not blending them with the same color scheme, they stand out more as people instead of war machines. Well done!