I did read through the thread, and I personally dont belive that they are crossed with Weims, there is evidence supposrting both sides, its up to each individual what they choose to believe. some say silver is not geneticly possable..so? we dont know everything yet, I own a dog who's colours are not geneticly possable according to current knowledge, I also have a guinea pig whos colours are not geneticly possable by cirrent knowledge. just because something is not possable by current knowledge hardly means its not possable, because there is a LOT in this world that we dont understand.