Totoro is adorable! Love the pic of him standing up on his hind legs!! He looks like a cuddly little teddy bear, such a cutie!!
As for his ears, most will shave the ears to take the weight off of them to help them stand. You could post this question in the grooming and or breeders section and you could get some info on how to do that
He looks like he is going to stay dark, but at this age it is hard to tell, its only my guess. Yorkies change colors so often, I love that about them!!