Question about Smudge above Middle spire in Kao-yot Sak Yant Tattoo

Hi everyone!

I tried posting on r/tattoo but it got removed, so I was curious as if to if someone here could provide any input.

I just got a sak yant tattoo, a Kao-yot, and I noticed this little blue smudge above the middle spire. I am curious as to if this is a mistake on the part of the artist or if this is just natural residue.

Is this bit likely to fade away over time? I know it is faint but I do find it kind of distracting, to be honest, and I am curious if I will have to get this small portion removed.

https://preview.redd.it/r3zvkorhp1gb1.png?width=962&format=png&auto=webp&s=6962cddcd84a062cc5073ea9bbeabe53ff0fc1b7

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