Will be taking another look at an avengers age of ultron theme with captain america. All of these avengers themes have similar styles and backgrounds. All of these themes change the color of your folders, text message backgrounds, and even phone dialing backgrounds. Each different theme you choose has its own unique sounds as well. To download one of these themes onto your galaxy s6 first go into the settings and click on themes. Once your in this section click on store at the top, and you will see an avengers age of ultron themes section where you can download some of these for free onto your galaxy s6.