Lemme see if I can explain this without grossing you guys out too much. I fell one day in my back yard and I fell forward and landed on one of my toes. After that I noticed the nail became shaky and blue but I left it there. It fell off about two months later but the new growth was kinda blushish. It is not disgusting or anything just blue. The other toe on my other foot got trampled on by a few people at a carnival fete turned blue and fell off as well and part of the growth was blue until my last pedi (2 days ago) got rid of the last spot of blue on that nail. I just have rotten luck.