As the worms turn (into silk, hopefully)

Well, the worms continue to grow. They are fat and juicy, several have begun to look "waxy," but show no desire to cocoon. They seem perfectly happy to just keep eating. thank goodness I have found two additional sources of mulberry leaves!  The picture above is from Sunday. The neighbors did a spectacular job feeding them while I was away and they were several times larger than before I left.  The pictures below are from this morning when I realized how much more  they have grown, the largest ones now measuring at 2.5 inches.  Some of them have gone to the expected white color, while many other seem to be retaining their stripes. I don't know if that is a varietal thing or pure contrariness on the part of the worms.