Blue boob

I’ve heard of the blue boob, but was wondering if we all have it on the nipple?  I have a blue nipple, and I’m starting to wonder where and how they inject the dye.

I had a blue nipple but I just thought it was seepage from lumpectomy could be wrong I didn’t think about it that much was more interested in monitoring coloured bodily functions ??x

Yes it is going back to normal colour ( just a blue tinge now) so I believe it to be staining but I have been able to have a shower every day and it was a week yesterday x