Green Hatting in the Six Hats, Six Coats metaphor is about the conceptual perspective of a system. Edward de Bono calls this the creative hat.
Green Hats take the feedback provided by the other five hats and look for the an opportunity to improve the quality of life, right a wrong or prevent the end of something good. In the Green Hat perspective designers evaluate goals, networks, data, processes, people and times that could, should or would exist. Green Hat conceptual design is used by the Yellow Hat contextual design team.
Like the other hats, the Green Hat is worn with each of the Six Coats. The basic question is what is the greatest benefit we can offer.
Green Hat, Green Coat: What is our meaning?
Green Hat, Yellow Coat: Why are we navigating?
Green Hat, White Coat: Why do we need data?
Green Hat, Black Coat: Why do we process?
Green Hat, Red Coat: Why are we personas?
Green Hat, Blue Coat: Why do we need convenience?
Green Hat also has a reverse purpose when variances occur in the transacting system. Green Hats decide how to handle a opportunity which is to insert a new product or service for the system to accomodate the exception. The buck stops here.