Thank you for your email. And we would like to apologize again for our mistake.
Yes, it is a food coloring. We put food coloring type of production from
raw material that come from nature (please see attached it is a product that dyeing).
The location to production of item Bow tie and dyeing is same area.
So, the color had splashes stick with product.
We certify all the colors, it is a food coloring in our manufacturing processes.