Does anyone know the name of this red-violet succulent plant?

This is a processed picture. It turned out to be a chocolate square brick.

Chocolate square brick is a horticultural variety of Sedum, belonging to small and medium-sized varieties. The leaf margin has a slight beige edge. Under strong light or large temperature difference, the leaves will appear beautiful purple-brown, such as chocolate. In weak light, the leaves are light brown and green, and the leaves are slender. The leaves of plants are smooth and not easy to accumulate water. There is no white powder in the leaves, and the chocolate square brick needs to receive enough sunlight to be bright, and the plant shape will be compact and beautiful. After years of group growth, the plants will be very spectacular, especially the old piles that have been trimmed for many years.