kit colour help.

Hi. I rescued a mum and her babies last week. She had 3 babies but despite rotating and topping up every 2 hours, the smallest baby passed away. They all looked like extra dark ebony’s however last night I noticed that the little boy had a white/ grey undercoat? His sister on the other hand doesn’t have this. Mum is medium ebony and i think dad was extra dark ebony. He is 2 weeks old. What colour is he?[ATTACH...

kit colour help.