Tenerife Parrot's beak (Lotus berthelotii), and hybrids made with it, are glorious plants for sunny, well-drained spots, especially in spots where the can trail and hang. Some of the hybrids have orange or yellow flowers. All the colors together would be sensational, like a cascade of hot lava.
You might mix in some trailing succulents as well, such as Burro's Tail (Sedum morganianum), String of Pearls (Curio rowleyanus, formerly Senecio rowleyanus), Baboon's Toes/String of Bananas (Curio radicans, formerly Senecio radicans), etc.