Zebra's stripes

Is a zebra white with black stripes, or black with white stripes? Does it really matter? Colour is a pigment of the skin (or in this case fur), and while it acts as an indication of heritage, it's not really anything other than an evolutionary tool to give us some added individuality. Would zebra's persecute each other if they thought they were different colours from their kin? No ? Then why should we?