The skin that comes with Jamroom: clean, responsive and easy to customize. It suits any kind of community, and it's the best skin to clone and build on. The pictures in these docs use it.
Skin: jrElastic2, version 2.1.2 in the Marketplace.
Install it from the Marketplace (ACP > Marketplace), then activate it: ACP > Skins > (skin) > Info > Set As Active Skin. See Changing the Site Skin. Its settings are on the skin's Global Config tab.
The skin shows sections for these modules when they're installed: Blog, Audio, Video, Event Calendar, Image Galleries, Forum, Followers, Item Ratings, Item Tags, Search. Without a module, its sections don't show.
Elastic 2 comes with Jamroom, so it doesn't need to be installed. To change its templates, clone it first: see Cloning a Skin.