Superstore comes packaged with two theme styles, Fashion and Tech, to help curate your store's colors, fonts, and styles for you.
Select a theme style in the theme settings
To select the theme style you would like to use in your store, click over to the Theme settings tab, then scroll all the way to the bottom to the Change theme style button. Here, you can preview the theme styles and select the one that's right for your store.
Applying and saving a new theme style will overwrite your current style settings, however, you will not lose any content from your store following this change.