Actually, I think that's the exact wrong lesson to take from this. That's what Color did: look for something that hasn't been done before and did that. It was a solution to a problem that doesn't exist: meeting strangers. People don't want to meet strangers, unless they're looking to hook up. That's why we construct amazing home entertainment systems; so we can avoid being around strangers. Ditto for Highlight and Airtime.
The takeaway from Color is not to go searching for the next big thing, but rather solve a problem that you yourself have (warning, you are probably not a normal person so don't spend too much time solving the problem before releasing something).