Colour: indicates neutrality and facts without the argument. A scientist's
white lab coat.
Aim: to get the pure facts.
It's good to use this hat near the start of a meeting in order to get some background. In the West we tend to jump in to the conclusion first without brings in the facts to support this.
What information do we have?
What information do we need?
What information is missing?
What questions do we need to ask in order to get that information?
How can we get these facts?
Opinions should not be use here unless you are stating someone else's. If you are using you're own then that is red hat thinking. You are really imitating a computer with this hat: cold and objective.