Autumn Annuals

Does anyone know what colorful autumn annuals I can plant in my front yard? i have sandy soil in the yard. I don't have anything growing and would like to create a nice landscaped area in the front yard from the veranda area, something i can relax in as well. the area is about 12 meters long x 4 meters wide, I have 2 sides (concrete walls) and the area in the middle from the house (veranda) to the wall bordering the property. The whole area is essentially a rectangular shape...
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