Design a temporary pavilion structure inspired by the shape and texture of a pumpkin. Create an organic and curvaceous form using lightweight materials such as fabric or inflatable structures. Emphasize the roundness of the pumpkin shape by incorporating curved walls and a domed roof. Use a combination of orange and green hues for the exterior, mimicking the colors of a ripe pumpkin. Consider installing small windows or openings to allow natural light to filter through.