Much too dark for Delrosi.
I see Harold Koopowitz ( malipoense x Roth) immediately and then the color of course comes from micranthum.
I have only seen a couple of photos of Krull's Lace ( I think is the name?) and they were very dark, almost black.
This is more like what I would expected. I believe the variability may be quite something in this cross.
I have two small seedlings.