People with this disorder usually have reddish-brown skin, ginger or reddish hair, and hazel or brown eyes.

CNN: Albinism

The man was white, between 40 and 50 years old, 5ft 8ins to 5ft 9ins, of slim build with blonde or reddish short cropped hair and a wispy ginger beard.

BBC: River Thames body mystery police issue clothing clue

This new genetic approach is also able to differentiate between some hair colours that are similar, for example, between red and reddish blonde, or between blonde and dark blonde hair.

BBC: Hair colour predicted from genes