It's often hard to tell how a finish is done from a photograph. This could be a troweled on plaster with the color integrated in the plaster, and it could also be troweled plaster or drywall mud followed by primer and base coat and then glazed. There are phenomenal finishers in Phoenix (and all over the country) who excel at this work. Get a real pro or this type of finish will look like horrid DIY work.