Are you talking about his gums or about the fur around his mouth?
Either way, I think it's pretty normal!
Is Smudge a particolour? (Sorry, I try to keep up, but I don't do very well) That would explain the particolour gums!
Obviously, if you are really worried about anything you should always go to the vets, but to be honest, this all sounds normal to me.
If you are unsure then maybe a photo?