Very rare Skalnik

This is a very rare two-tone Skalnik. Twigs Skalnik yellow-blue. We have three of these Skalniks. Four years ago we had one such Skalnik. That Skalnik died for some reason. Then I got three more Skalniks. These Skalniki began to live.
The plants tripled in three years. They are now about two feet high.