Sometimes the kids don't elaborate on why they give their advice. Perhaps ask them for specifics: is it the color itself or maybe the particular fabric of the white pants. If they say something like, the white pants shows your underwear through, or the white fabric pulls over your body... MAYBE it's not the color at all, but the fabric or the fit. (My two adult sons tell me their words of wisdom at times, and the more they elaborate, the more I appreciate the depth of their thoughtfulness - tho I may not necessarily agree with their opinions.)