How colors came into the European Yorkshire Terrier Breed

The traditional Yorkshire Terrier was developed by breeding other terrier type breeds together.
In the beginning Scottish workers came to Yorkshire for work bringing their “Broken Haired Scotch Terriers” with them.
So what breeds were bred with these dogs to get to what became the Yorkshire terrier? Unfortunately no real records were kept but because of their appearance it is thought that 3 terrier breeds were bred into the lines, Clydesdale Terrier, Skye Terrier, and Paisley Terrier.
In 1874 theses dogs were given their official name of Yorkshire Terrier and AKC registered them in 1878.
Over the years the American Yorkshire Terrier has developed with the dogs brought here at that time, and the standard colors are black and tan or gold, and blue and tan or gold.
At times variations of these colors starting showing up. Colors like chocolate and tan, parti, chocolate parti, blonde and we now have the Biewer Terrier which is considered in the United States as a different breed even though they were born from Yorkshire Terriers in Germany. Were these colors naturally occurring in the Yorkshire Terrier or was another breed who carried those colors bred in at some point to make these colors. There are no records of that being done in the United States but that does not mean it did not happen.
Fast forward to today. In Europe breeders have been producing black with no tan, dark chocolate with no tan, golddust, merle, brindle and more.
These colors are not naturally occurring in the Traditional Yorkshire terrier.
What I have found out is that at some point these breeders carefully introduced other breeds into their Yorkshire Terrier breeding programs in order to produce these colors, and have been, and still are breeding back to Yorkshire terriers until the breed is pure again. This takes generations to accomplish.
What also came with the introduction of these breeds was less aggressiveness, better temperaments, healthier and sturdier dogs, along with vibrant color that does not fade, better hair quality and an all-around better quality European Yorkshire terrier.

With IBC you will see Chocolate Yorkshire Terrier, Biro Yorkshire Terrier, Biewer Yorkshire Terrier, Golddust Yorkshire Terrier, and Yorkshire Terrier. All colors are considered a variant of Yorkshire Terrier.
I feel fortunate to have been able to bring these colored European Yorkshire Terriers to my breeding program. The colored Yorkshire terriers are still in the beginning stages and I am happy to continue to help these beautiful, healthy, loving dogs evolve!!
Their quality is amazing!!
For more information on this subject please contact me and I will do my best to explain!