A majestic and vibrant horse runs freely in a vast arid desert

A majestic and vibrant horse runs freely in a vast arid desert. The horse has an extraordinary coat that displays all the colors of the rainbow, in a harmonious gradient that starts at the head and ends at the tail. The sky above is clear and blue, no clouds, and the sun shines brightly, casting soft shadows on the golden desert sand. Small dunes and some resistant plants complete the desert landscape, further enhancing the colorful and dynamic figure of the horse.