De Bono’s 6 thinking hats are:
1) blue hat: this is the control hat that manages the thinking process, think of it as the leader who controls the agenda
2) white hat: this is the information hat that focus on facts, analyzing the information you have
3) black hat: is the safety hat that helps you identify risks and problems while brainstorming, you check what is wrong and the possible reasons for it
4) yellow hat: the optimistic hat identifies benefits and value, you states reasons for them
5) green hat: is the creative thinking hat that helps you explore ideas
6) red hat: is the feeling hat that uses your intuition and gut feeling