What is the color of 'humanity?'?

When young I judged a book by its cover and a person by their appearance but now I'm older the bodies, the faces, the clothes (and the car and the house!) seem unimportant. Behind the eyes is a mind that thinks just like me. This mind may hate me or love me or ignore me but that doesn't matter - if the heart that makes this stranger's mind beat and makes his (her) mind smile and it shows on the mouth then it's fine. We get through another day without colour, without tallness, or fatness, or thinness, without anything at all except the memory of that smile.