Jo Ann,
Yes the seedlings mostly come up all green or mostly so. Some of the red heuffs will show red fairly early and some of the ones from the Borscht group will show purple early on too. The heuffs are diploids so it's a bit easier to pull out recessives. The bigger ones tend to be all green so I was surprised when the big brown appeared. Some of Bill Nixon's cultivars are from Pallasii which is a bigger one and in selfing these I get the occasional ones with bigger rosettes and red color. The red leaves descend from one called Giuseppi Spiny and it is smaller sop the two traits (small and red) might be linked.
Leonine Gardens is the one with PCNs. They have a great assortment. Here all they want is light shade and not much water in summer. Other than that very easy. It's the only thing that's happy in maple tree roots.
It will be a few years before mine are on the market. I only started breeding them 5 years ago, when I moved to Oregon.
Kevin