So, I\'ve read on the forum that crossing silver to black can be advantageous if you\'re trying to improve size, type, eggs, etc. How many generations of crossing back to silver does it take to get back to decent silver coloring? More than three generations? I\'ve seen published somewhere a \"purity chart\" for lack of a better term since I can\'t remember exactly what is was called were F1 is 50% pure, 2nd crossing 75%, 3rd 87.5%, 4th 93.75% and so on. What\'s the breaking point for silver is what I guess I\'m asking.