How Far Can the ShareTribe Prepackaged Version Reach

We are currently working on a marketplace that we want to scale. We want to stick with ShareTribe hosted solution as much as possible for now until our concept gains enough traction and has a strong first success. We are really in love with the http://artdew.com/

The website seems like solidly build (although some parts of it seem abandoned). My question can we have through the limited tweaks on the share tribe hosted solution some design features such as the ones portrayed? The top menu bar, footer info with social media icons and etc…

A better question, what are the most customization that can happen on the sharetribe hosted solution?