Tzora'as is not all the same; one person would get a white spot, and another person red-white. For sure, these Nega’im are personalized, and each person has to improve himself in the way that’s best for him. White is a message: “Become “white”! (i.e., pure), and some people need to constantly focus on the potential greatness that they can achieve, like Yosef HaTzaddik who refrained from sinning with the wife of Potiphar since he was informed that he wouldn’t be included in the holy Choshen if he sinned. (Gemara).
You look upwards at all the beauty that doing the right thing brings to your life. The Simcha of finishing Shas, and going all-out for doing Tzedaka and Chesed. The good feeling and the Romemus that you feel when you are Osek in Kedusha and Tz'niyus and self-control. You feel good about yourself when you control your Ka'as and Kin'ah etc. All day you talk about becoming great, and it inspires you.
You admire great people, and you decide to be like them. You are happy aiming at the “clouds”. Indeed, Rashi says that: בַהֶרֶת “Baheres” means: בָּהִיר הוּא בַשְּחָקִים bright in the sky, and: שְאֵת means to lift up. But other people need a mixture of red and white, since just aiming for the stars won’t help them. They need to also focus on the evil (red), and how it hurts to do the wrong thing.
