Personally, I think that grey is a bad color: too dreary and dull. Also, tell people how they can use your social network in a way that Facebook cannot do, i.e.

Personally, I think that grey is a bad color: too dreary and dull. Also, tell people how they can use your social network in a way that Facebook cannot do, i.e. provide use cases and have strong calls-to-action to try those features out. I would focus a lot on the multiple profiles feature.