Has anyone's baby had their nose change color?

As a baby Paisley's nose was as black as black. As she got older she had this little lighter spot in the center of it. I loved this spot and yes I know it wasn't correct but I still loved it so much.

Now I just realized that her nose is black again. What in the world is going on with my little girl's nose? I think she's just confused, haha!
The first picture is from about 2 months ago and the last two were just taken.