my dogs tecticles are black is it normal?

hi my 10 month old rhodesian ridgeback cross boxer has black tecticles. it wasnt all over and now its all over, they used to be skin colour but are now black.

just wondered if this was normal or shall i take up the vets? he ok in himself full of energy

i will post a picture very soon.

there is a picture on my public file

It depends... It is probably just a pigment that is developing in his skin as he gets older. Kind of like a Jack Russell or Dalmation who develop more freckles and pigment in their skin while they are maturing. A Ridgeback, of course doesn't have freckles but they do have a deep color to their skin and coat often with points of darker color around apendages.
If the skin is smooth and calm and healthy looking, I would worry, if it looks thickened or elephant like then I might take him in to the vet, he may be developing allergies. I am assuming he is intact and hasn't recently gone through surgery? Are you showing him?

no surgery,
tecticles soft, its that ive seen most dogs tecticles skin colour

No actually, most dogs have pigmented skin on the scrotum.