What a bummer. It makes me so sad to hear you lost that gorgeous container of 'Coral Reef'.
Your Sieboldii variegated might still come out of dormancy. It is one that comes out late for me.
Salsa Verde is one of the S. makinoi sedum. I don't seem to do to well with them in the ground or in pots. But what beautiful plants they are.
I am finding that some just don't do well for me in containers over the winter. I have been experimenting with planting them in sandy loam and so far they are doing better in less sun, about 1/2 day.
I ended up getting a new 'Ogon' to try for the third time. This time I planted it in bright shade, in amended soil that will hold some moisture in the drought season.