This is going to be a problem in the Sedum database, as there are so many variants of Sedum acre that come from different areas of the world. Each with a unique difference. There really is a difference in the one that is know as Sedum acre var. aureum, and there are other S. acre with differences.
http://www.sedumphotos.net/v/s...
Deb yours looks like Sedum acre 'Elegans'. The creamy variagation is a spring time coloration that will fade as the summer approaches.
http://www.sedumphotos.net/v/s...
I believe all the Sedum acre bloom yellow.