There are numerious ground cover plants that go great with the dichondra.  One of these is the Purple Ice Plant. This ground cover gets its name from the butterfly attracting daisey-like flower that lasts all summer long.  This carefree plant is ideal for dry conditions with full sunlight.  Making it one of the finest drought-resistant ground covers available. Also I must say one of the best-looking! If you are interested in or just want to learn more about this plant check out Gurney's Seed and Nursery.