its never really ever mattered to me what they look like, ive always gone to meet the pup first and then i have just known the right one, the one that melts your heart is the right one.
you could wait for the so called right one and just get one for how it looks and end up with one that you wont have such a strong bond with.
or you may go and see some pups and one just sticks out to you that doesnt look like your perfect yorkie but you will have that strong bond with.
im guessing you havent had a yorkie b4?
please read up about the pros and cons on having a tiny yorkie.