With the avengers age of ultron coming out samsung released some new themes for the galaxy s6 edge. To find these new avengers themes you need to go into your settings and scroll down to themes. From in here click the store and scroll down until you find the avengers age of ultron themes.
All of the themes are free, but the one that stands out the most is definitely the iron man theme. To get this theme on your s6 edge simply click the download link on the iron man theme. Once it download click apply theme. It takes about 10 seconds for this theme to apply, and once it is you will see just how awesome this theme is. This iron man theme literally changes everything on your galaxy s6 edge and it looks sweet. If you need to switch back to your stock galaxy s6 edge theme just go back to settings and themes.