ask yu yu hakusho

silver to red

Kurama how come your hair is red but had silver when you were in demon world before you died do your dad got red hair

Kurama: well I really don't know how to answer that

Hiei: maybe it was because of that human mother of yours

Yusuke: that can't be his mother got black hair

Kurama: hiei's right but yusuke is to soo

Kuwabara: or kurama's mother has ancestors that has red hair

Kurama: maybe