I have Semp 'Black', and like it too, but I wonder about the name because the hybridizer is unknown, could it be one of those semps living in a nursery for which the name was lost (a NoID) and a new name given?
Revisiting an earlier post of mine, I showed side-by-side photos of two semp varieties from Youngs, only about a month after receiving gthem mail-order, 'Black' on the left, and the "Santino-Mis-ID" on the right, pretty much looking identical in these two photos taken on June 10, 2018 (date for coloring based on time of year). The issue of Young's mis-ID 'Santino' has been kicked around several times, but I don't think there was comment to that mis-ID 'Santino' looking very much like 'Black' as sent out by Youngs.
Another semp mystery, and who doesn't love a good mystery?