This succulent made a brief appearance in the nursery trade a couple of years ago and has since vanished perhaps after someone realized that like most Euphorbias the sap is poisonous and can cause eye damage and skin irritation. The plain green form which is native to Uganda, Zaire and Zanzibar is sometimes known as milk bush though it can easily grow into a small tree some 5 metres tall. This cultivar is a little less vigorous and makes a great container plant .As the weather cools down, the colour changes becoming deeper orange and lipstick pink by winter. It is not tolerant of frost.
2017 update: I have just done a batch of cuttings so should have plants available later in the year.