You start out early at age 1-2 always pointing out the beautiful differences in your skin colors. You affirm that their skin is beautiful and they are valuable beyond measure. Your job is to counter-balance the image society feds us about skin color. You build them up early and as much as you can and then you make sure you have a strong presence of people in their lives that look like them. Find a mentor for them who is of color who can teach them the rules to live by in this society that puts so much emphasis on skin color. Talk talk talk. Start now talking about race and color and culture so they will always feel comfortable coming to you and talking about the racial issues they will have.