Six Hats

“Six Thinking Hats was written by Dr. Edward de Bono. "Six Thinking Hats" and the associated idea parallel thinking provide a means for groups to plan thinking processes in a detailed and cohesive way, and in doing so to think together more effectively”

From Wikipedia - Six Thinking Hats - https://en.wikipedia.org/wiki/Six_Thinking_Hats

More descriptions:

Red – intuition, hunches and feelings

White – facts and data

Yellow – benefits, positive aspects

Black – caution, risks, and weaknesses

Green – creative ideas

Blue – managing the thinking, focus and summary

For more information you can google six hats or buy the book.