More Innovative and Productive Meetings with the Six Thinking Hats system

The Six Thinking Hats system has been around for a while. It is described in this book by DeBono.
In short- conceptualize six distinct 'thinking modes' (metaphorical hats). Specifically ask the team to 'wear' one at the time, resulting in everyone reasoning from the same 'mode'.
The six hats are:

Gather Information: (White)                   
Express Emotions and Intuition (Red)      
Devils' Advocate/Negative logic (Black)   
Positive Logic/Benefits/Harmony (Yellow) 
Creativity (Green)