WOW! Such neat colors!
As for the Harlequin colors, I am guessing that the white collie factor has alot to do with it, even with a blue merle white collie can produce that color with another tricolor with blue merle genes.
We did have one puppy that was sable blue merle, lovely as she was but the judges said NO and the new owners did not show her at all. She was one special, and best daughter out of Witch. (Forum's Witch Hazel, blue merle..daddy was Plutonium Platunium (sp wrong). We did have a tri that was bleached in the sun but in the winter he was goreous, his father was a sable and mother was Witch....it is a cross you didnt want to make but the breeder took a gamble, it wasn't so bad but the colors would not be as "rich" as the appropriate crosses would have been.
If I remember right of the bi color collie, I think Trifoil or Trefoil was a bi colored Collie....he could have been a crossed Border Collie. Then Trefoil crossed with some B*****s that was less than desirable, made some wonderful dogs later down the line. Charlemagne was something else, he was beautiful! I love reading the stories of Bellhaven and Parader as it was mentioned somewhere in the yearbooks and CCA's magazines...sorry I sold them all on
Ebay to a lady out in CA. I have a few books I kept about the white collies since I LOVE white collies with sable heads. Glynne Heinbuch had Forum's White Ghost ( I think that was his name), he was a champion and he was beautiful in the pictures. Alas, she did not keep any of his offsprings because white collies back then were kind of on the sidelines.
Bless her heart, Glynne really taught all of us the value of her collies and what they SHOULD be, not by whim and fads of today's breeders. The heads on the collies nowadays seems to be weaker and smaller, too refined and alot of skin problems popping up. UGH! What have we done to them! Twenty to thirty years went by, looking at our collies we had and today, such a big difference!