Positive or Negative bent of nature

Hi Members, Have been reading palms since a few years, and I have a question---How do you find out from the hand overall if the person has a negative or positive bent of nature or character ? We all have a mixture of good and bad qualities, yet some do have an unhealthy destructive mind and some have the opposite kind. Now, some palmistry books say that a dark or reddish palm indicates negativity and a light pink hand indicates positivity or good energy. Is it true ? I have not found ...