How to add a new stores theme
The software comes with only one theme for everything, for the Stores themes also comes with only one theme.
But you can add unlimited stores themes very easy.
To create a new store theme, just copy these templates:
to another files, say you want to create a new theme called "River", so copy these files to:
in the same View directory for every theme you have, for example Default/view folder.
Then customize these templates to any look you want.
After you finish, take a screen shot of your theme and name it as:
Put that image in the theme/Default/images folder for every theme you have.
Your users will see this new theme and can selet it in their store settings.