Available Images Same animal now aged 2 years with her own Silver Grey calf.Six months old.One hour old.Seven months old.One month old.One hour old.A black calf stays Black!A Dark Grey calf turns dark chocolate with age.A Grey calf turns brown as it grows like this ones mother.A Light Grey calf turns pale dun/beige with age.A Silver Grey calf turns darker silver grey with age.A Silver calf, turns whiter with age.