To be the rainbow in someone's cloud means to cultivate loving kindness as a daily practice in your life. It means tuning in to your heart, practicing empathy and using that empathy to connect to the people around you in a meaningful way. We all have the opportunity to be someone's rainbow
The school counselors do not give direct instructions, not once has a counselor of mine done so. So; a school counselor could change your life with the advice you are given.