Crikey mate, lucky you're not blind because you then couldn't work out if they were black or white (what a tragedy..eh)
I guess you could always do a Braille on them, eh, and read their pigments, mate, or short of that, get the guide dog to give you a clue..eh? 1 bark = White 2 barks = Black 3 barks = ???...Crikey mate...have we got an Zebra?
