It has a deep gray-green skin tinged with purple. In cold weather, the purple becomes more pronounced.
You can see the glochids, which are the tiny barbed spines you see spread out all over the prickly pear pad and across the top of the pad. The tiny barbs from the glochids are very fine and get all over you and in you.
I prefer dealing with the long, sharp spines at the top of the cactus pad as they are easy to see and avoid.
I took this photo while hiking around the Boulders Resort and Spa in North Scottsdale. You can see it has raindrops that have tried to clean off the desert dust.