We grow a good many sedums and succulents outdoors and I love the way the changing seasons bring out different colors in them. Many exhibit vibrant color in the fall while others put on a show in early spring with their inflorescence. One we allow to grow as a ground cover in the early spring, only removing mass quantities of it to plant tender annuals. Holly also has containers of succulents all around as well as a living wreath filled with them.
I believe the sedum we allow to grow as a ground cover may be Sedum japonicum 'Tokyo Sun'.