The desert will soon turn golden with the flowering of palo verde trees. To learn about them see my post: Palo Verde Trees Will Turn the Desert Golden. That post has photos of the flowers to help you identify the species.
Be careful when inspecting the flowers. The flowers of young Blue palo verdes hide spines under the petals. The Foothills palo verde has a spike terminating each branch.
Another bloomer now is the reddish orange flowers of the Ocotillo.