The chollas are blooming. The plants are spiny, full of stems and prickers. They look like a shrub that forgot to grow leaves. But in the spring, their blossoms redeem them. These two images are probably staghorn cholla or pencil chollas. The blooms are red to orange to copper to burgundy in color.
The structure of the staghorn cholla, lots of stem and branches that emanate from a central trunk, appear to be a reddish brown color. Some sources label the stem color as purple. The copper blossoms accent the reddish branches, a delightful change up from all of the desert yellow and white flowers.