Hi.. my name is Diana and I have mostly Biewers with just a few tri colored Partis at present.. we do have one ee Parti named Fleur (9 months old) but I'm expecting a litter of pups this week that are from an ay yorkie and a carrier Biewer so we are very excited to see what we will get from that pairing. I am expecting some ay pups, a traditional and possibly an ay parti out of the litter (she's gotten pretty big LOL)
I've so far stayed away from the chocolates as you need to be very very careful on their pedigrees and I just don't know enough about them to be certain.
Most Parti breeders are on FB.. that maybe where you want to go for information and to meet people.
Best of Luck..
-Diana