I don’t know if you can tell really tell, especially because I already tried scrubbing at it in the shower, but my armpits and all the way down and around my shoulder have been black/greenish? the last couple days. It can’t be my bra because I’ve tried 3 different ones to see if that was it. It almost looks bruised or something. It doesn’t hurt or anything it just always surprises me when I go to get in the shower. Has anyone else had this happen and/or know what causes it?