What I see in Utukku is a very wolfish and typical pure Czechoslovakian Wolfdog, the darker coat is not new in the breed, you can find it in several dogs, Anomad Debowa sfora for exemple:
http://www.wolfdog.org/site/dbase/d/8118
But I really think that breeder and owner will see no problems in make the DNA test, even because it was not the first time I heard people telling it.
Im thinking in make the DNA test in all my dogs and I really think that all the breeders must try to do the same.
We have Antagene and Laboklin as laboratories which already tested the DNA of Czechoslovakian Wolfdogs, will be great if we all choose one laboratory to send the samples of our dogs because I wonder if the laboratories share informations, for exemple, if I send a sample fo Iran to Antagene and someone which to test if he is the father by Laboklin, probably I will need to send a new sample (??).