Avonia quinaria ssp. quinaria Crassulaceae It has the triangular leaves

It has the triangular leaves that look like a pair of jaws

but yellow is pretty rare in my experience

The degree of redness seems to vary by light and temperature conditions and the reddest leaves are usually the older ones (no promises on how red yours will be if at all)

Produces white flowers in the fall

Avonia quinaria ssp. quinaria Crassulaceae It has the triangular leavesAvonia quinaria ssp. quinaria An unusual and attractive miniature caudiciform from South Africa. The base of the plant is light brown with peeling bark. On top are numerous silver blue to green stems with scale like leaves. At the ends of the stock are pink flowers that can be bigger than the young plants themselves! These flowers open in the late afternoon or evening. In time the plant can reach 2 3" in diameter (very old plants can be even bigger).