The avengers age of ultron iron man theme looks awesome on the galaxy s6. There are some other cool avengers themes as well, but the iron man theme is one of my favorites. Whats even cooler about these themes is that they 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.