Good Morning and welcome. I am Dr. Loretta, a licensed veterinarian and I am happy to answer your question.
Congratulations on your new puppy! This must be very exciting.
The thing with new puppies is that this environment and possibly food change causes such stress, especially being taken form their litter mates that this shows as a digestive disturbance and this diarrhea. The color is caused by bile from the digestive tract.
As long as Bolt is acting normal and eating well, this is a very good sign. You have done the correct thing by feeding rice and boiled chicken which is a bland diet and will help his system regulate.
It is good to have your vet check Bolt to be sure that this diarrhea is not caused by parasites or that he has other issues. In most cases, though, Bolt will be fine once the stress is decreased as he adapts to his new and wonderful loving environment.
Does that make sense to you?
Please let me know if you have ANY other questions. My goal is to give you 100% satisfaction and if you are not yet satisfied, please Reply so I can clarify for you
Sincerely, XXXXX XXXXX