Mr. Kiestra has moved to Canada, he did take a few horses with him to start a breeding program over there - not bad for a guy well in his 80's!!, he has family over there that is why he has gone over.
Occasionally the odd one of his horses did have white on it, but that is in the gene pool anyway and pops up more regularly than you think - it is totally random too, we had a colt with white feet out of a mare that always throws pure blacks - I thought it looked quite smart he went to a lady in London who thought it was too and would make her horse stand out!!

He was also blue black, I heard somewhere the blue blacks are more likely to have white that is why they are so difficult to breed maybe the 2 are closely linked? Wessel is blue black though, he never fades which is nice! You will find any of the big breeders will pass the ones with white on out the back door as they don't want people to know thier lines have it, but all the lines have it that's why it is so random, white on the face is another one that pops up too, a small white star is permissable though. I have heard of people dying the white parts of thier horses to show them!!

or plucking them out.
One of the breeds founding stallions, can't remember which

, roaned out grey as he got older and alot of his offspring had grey in thier coat and white markings, they stopped breeding from him, but when they started getting problems from inbreeding with the remaining 2 stallions they had to bring him back in, so it is in the base stock to start with. And they used to come in chestnut and grey - hence the occassional red friesian pops up, means they have a few colours hidden away in the genes!