Jaw looks funny

[RW3]

I would say it is normal, because my Piebald has this feature of darker scales under the jaw, it almost looks "dirty" since the brown scales look like flecks agains the white.

Thanks. I was going to try to get a better photo today but we are recovering from having our hardwood floors refinished this weekend and trying to get the house back in order. It does look "dirty" though.

As to the question about the substrate, I am using unprinted newsprint.