All races are born with a colour and a count, the colour indicates what magical attribute the person is born with and the count signifies the level of power, the higher a persons count the better off in life they become, in some rare cases people are born without a colour, but with A high count, due to having a high count they are still classed as noble beings, so imagine the disgrace Kaito Ruyji brings to his family with no colour and a count, of zero.