Well, I'm not to sure what you mean by the Silvia, unless you're talking about the color of his gums, but they were pink but now they are yellow.Hello,
The bump on the first picture is a femoral pore more prominent on males. So no worries there.
I am not sure what the black dot is, but sometimes they can get specks or dark spots on their
scales like a freckle that are harmless.
It looks like he is going to shed in a few areas on his head & beard area.
Are you referring to the saliva on & around his gum line?